Ingrid Hornef

Ingrid Hornef acquired her professional skills as an autodidact and opened her own studio in 1985. In her early days, she was mainly concerned with pottery and attended ceramic courses in 1984 and 1985 with the well-known Japanese ceramic artist Takeshi Yasuda. In 1992 she took part in workshops by Mária Geszler Garzuly in Kecskemét, Hungary.

Besides her work as an artist, Hornef is also active as a curator. In 2002, she initiated the temporary sculpture trail Land schafft Kunst (Land Creates Art) as part of the Rhine-Main Regional Park between Hochheim-Massenheim and Wiesbaden-Delkenheim. The area is a typical industrial landscape with seemingly intact nature, but at the same time there are high-rise buildings and high-voltage power lines that dominate the landscape. Hornef invited 21 artists to create their works especially for this place.{{cite book |date=2002 |title=Skulpturenmeile: Land schafft Kunst, 18.08. bis 29.9. 2002 |trans-title=Sculpture Mile: Land creates art |language=de |location=Hofheim am Taunus |publisher=Deutsche Gesellschaft für Gartenkunst und Landschaftskultur. Landschaftsverband Hessen |isbn=3-00-009865-8}}

In July 2019, Hornef organized a German-Greek–WWII–memorial and peace project named Building Bridges, together with city councilor Annette Courtis, who has Greek roots and who, like Hornef, lives in Hofheim am Taunus. In a small village called Chouni (municipal district of Agrinio), Greece, 16 German and Greek artists created works of art from sandstone under the direction of Hornef, in which they dealt with the history of Chouni during World War II. The village had been almost completely burned down by German soldiers in 1944.{{cite web |url=https://www.fnp.de/lokales/main-taunus/hofheim-ort74520/hofheim-steine-behauen-fuer-den-frieden-90876755.html |title=Hofheim: Steine behauen für den Frieden |trans-title=Hofheim: Carving stones for peace |last=Schmidt |first=Barbara |date=2021-07-22 |website=Frankfurter Neue Presse |accessdate=2022-12-13}} Parallel to this, lectures on the effects of the Second World War in Greece were held. The resulting sculptures were permanently installed on the village square in Chouni.

In July 2021, a corresponding workshop took place in Hofheim, again led by Hornef. Here, too, the invited German and Greek artists formed works of art in which they dealt with the historical background of the time. A jury selected ten sculptures that were permanently installed as a peace path near the memorial for fallen soldiers of the two world wars.{{cite book |date=2021 |chapter=Brücken schlagen: Ein deutsch-griechisches Erinnerungs- und Friedensprojekt zum Zweiten Weltkrieg |trans-chapter=Building Bridges: A German-Greek Remembrance and Peace Project on the Second World War |title=Main-Taunus-Kreis Jahrbuch 2021 |trans-title=Main-Taunus County Yearbook 2021 |language=de |location=Hofheim am Taunus |publisher=Kreisausschuss des Main-Taunus-Kreises |pages=143–146}} The mayor of the city of Hofheim, Christian Vogt, acknowledged the commitment of the two initiators: "The peace path at the memorial is intended to remind us not to forget the terrible chapter in German history, but it is also intended to show that we can overcome the rifts that have arisen between our peoples today and open a new chapter together." (In German: "Der Friedenspfad am Ehrenmal soll uns mahnen, das schreckliche Kapitel der deutschen Geschichte nicht zu vergessen, soll aber auch zeigen, dass wir entstandene Gräben zwischen unseren Völkern heute überwinden und gemeinsam ein neues Kapitel aufschlagen können.")Peter Kolar: Wer Brücken baut, überwindet Gräben. Deutsch-griechischer Erinnerungs- und Friedenspfad. In: Hofheimer Zeitung. 15. Juli 2022.

In 2022, Hornef curated the Art Concret exhibition at the Museum of Modern Art in Hünfeld together with Veronika Rodenberg. 26 artists from France, all members of the artists' association Salon des Réalités Nouvelles in Paris, France, presented an overview of current trends in Concrete Art.{{cite web |url=https://www.museum-modern.art/aktuelles |title=Aktuelles: Neue Ausstellung "art concret" eröffnet |trans-title=News: New exhibition "art concret" opened |website=Museum Modern Art Hünfeld |access-date=2022-12-13}}

Ingrid Hornef lives and works both in Bages in the south of France and in Hofheim.{{cite web |url=https://www.hofheim.de/verzeichnis/kuenstler/Ingrid_Hornef.php |title=Hofheim: Verzeichnis Künstler |website=Stadt Hofheim |access-date=2023-03-15}} She is a member of the German artist group "Gruppe Konkret"{{cite web |url=https://gruppe-konkret.info/die-kunstlerinnen-und-kunstler |title=Künstlerinnen und Künstler |website=Gruppe Konkret |access-date=2023-03-15}} and of the Salon des Réalités Nouvelles{{cite web |url=http://www.realitesnouvelles.org/site_2020/artistes_2020.htm |title=Réalités Nouvelles: Artistes 2022 |website=Réalités Nouvelles |access-date=2023-03-15}} in Paris.

In the course of her many years of artistic activity, Hornef has worked with a variety of different materials: clay, wood, metal, stone, etc.{{cite book |last=Bierwisch |first=Heidi |date=2010 |chapter=Zur Werkgruppe alea iacta est oder der Zufall in der Kunst |trans-chapter=On the group of works alea iacta est or chance in art |title=Ingrid Hornef. Volume 1: Linie, Fläche, Raum |trans-title=Ingrid Hornef. Volume 1: Line, Surface, Space |language=de |location=Wiesbaden |publisher=Carola Weber |isbn=978-3-00-030383-8 |pages=39–41 pp. 41}}{{cite web |url=https://www.frankfurt-live.com/ingrid-hornef-mit-ehrennadel-in-gold--uumlberrascht-125088.html |last=Bauschmann |first=Bernd |title=Ingrid Hornef mit Ehrennadel in Gold überrascht |trans-title=Ingrid Hornef surprised with gold badge of honor |date= 2020-09-15 |website=frankfurt live |access-date=2023-03-15}} Color is used to accentuate the surfaces, and the artist often works with black and white contrasts.{{cite book |last=von Mengden |first=Lida |date=2016 |chapter=Spielfelder des Zufalls |trans-chapter=Random fields of play |title=Ingrid Hornef. Alea iacta est – Der Würfel ist gefallen. (Eine Sammlung von Fremdtexten über die Künstlerin, u. a. von Lida von Mengden und Albrecht Beutelspacher |trans-title=Ingrid Hornef. Alea iacta est – The die is cast. (A collection of third-party-texts on the artist, among others by Lida van Mengden and Albrecht Beutelspacher) |publisher=Ingrid Hornef |location=Hofheim am Taunus |isbn=978-3-00-052613-8 |pages=8–20 pp.13}} The turn to Concrete Art can be roughly read from the respective work phase with specific materials. Since 2002, the artist has concentrated on the series of works Alea iacta est (The die is cast), in which she determines elements of the respective work using a dice as a random number generator.{{cite book |date=2008 |last=Möckel |first=Birgit |chapter=Ingrid Hornef: Alea iacta est |title=Die Rationale II – Konstruktive, Konkrete Kunst. Katalog zur gleichnamigen Ausstellung im Frauenmuseum Bonn |trans-title=The Rationale II - Constructive, Concrete Art. Catalog for the exhibition of the same name at the Bonn Women's Museum |location=Bonn |publisher=Marianne Pfitzen; Bonn Women's Museum |isbn=978-3-940482-099 |page=48}}

Hornef turned to abstraction for the first time in her Schnürungen-series (Lacing) (circa 1990–1997). Instead of figurative ceramics, there are now abstract objects that are vaguely reminiscent of human figures.{{cite book |date=2010 |chapter=Eröffnungsrede Heidi Bierwisch zur Ausstellung dazwischen im Forum Konkrete Kunst Erfurt am 9. März 2008 |trans-chapter=Opening speech by Heidi Bierwisch for the exhibition dazwischen at the Forum Konkrete Kunst Erfurt on March 9, 2008 |title=Ingrid Hornef. Volume 1: Linie, Fläche, Raum |trans-title=Ingrid Hornef. Volume 1: Line, Surface, Space |language=de |location=Wiesbaden |publisher=Carola Weber |isbn=978-3-00-030383-8 |pages=39–41 pp. 40}} Hornef formed clay tubes, which she tied with a rope, thus determining what shape the tube should take. Factors which the artist could not control had an influence on the resulting form: "It can come to arbitrary eruption, to tearing of the clay, to buckling, to soft bending and gentle flexing. In the subsequent firing process, the level of temperature, any reduction, and the various surface treatments play a crucial role." (In German: "Es kann zum willkürlichen Ausbruch kommen, zum Reißen des Tons, zum Knicken, zum weichen Biegen und sanften Beugen. Beim anschließenden Brennvorgang spielen die Höhe der Temperatur, eine eventuelle Reduktion und die verschiedenen Oberflächenbehandlungen eine entscheidende Rolle."){{cite book |date=1994 |title=Ingrid Hornef. (Eine Sammlung von Fremdexten über die Künstlerin, u. a. von Erich Fitzau und Ursula Teschner) |trans-title=Ingrid Hornef. (A collection of third-party texts, among others texts by Erich Fitzau and Ursula Teschner) |language=de |location=Hofheim am Taunus |publisher=Ingrid Hornef |pages=4–5 pp.4}}

Until about 2006{{cite book |last=von Mengden |first=Lida |date=2016 |chapter=Spielfelder des Zufalls |trans-chapter=Random fields of play |title=Ingrid Hornef. Alea iacta est – Der Würfel ist gefallen. (Eine Sammlung von Fremdtexten über die Künstlerin, u. a. von Lida von Mengden und Albrecht Beutelspacher |trans-title=Ingrid Hornef. Alea iacta est – The die is cast. (A collection of third-party-texts on the artist, among others by Lida van Mengden and Albrecht Beutelspacher) |publisher=Ingrid Hornef |location=Hofheim am Taunus |isbn=978-3-00-052613-8 |pages=8–20 pp.14}} the artist concentrated on the production of large and small stone sculptures. Hornef mostly used sandstone for the large works, smaller sculptures were created from tuff.

Her first major project was the Schauaufsland-sculpture (1999) for the so-called Panoramaweg of the Rhine-Main Regional Park. This section of the regional park is actually entitled Landwehrweg, but is also called Panoramaweg because of its beautiful panoramic view. It lies between the neighborhoods/towndistricts of Flörsheim named Wicker and Bad Weilbach.{{cite book |editor-last1=Faust |editor-first1=Alfons |editor-last2=Flagge |editor-first2=Ingeborg |editor-last3=Rautenberg |editor-first3=Thomas |date=2001 |title=Der Regionalpark Rhein-Main |trans-title=The Regional park Rhine-Main |language=de |location=Flörsheim |publisher=Das Beispiel GmbH |page=102}}

Taking up the concept of the Regional park, according to which works of art were supported and intended to make the Rhein-Main area more attractive for the residents, five stone sculptures were created by artists as part of an international sculpture symposium. The resulting artworks remained in the landscape. The works were created on site in public, so that interested visitors could view the works and speak with the artists.{{cite book |last=Werkmann |first=Heidi |date=2021 |chapter=Skulpturenpfad am Panoramaweg: Kunstwerke aus Stein setzen Zeichen in die Landschaft |trans-chapter=Sculpture trail along the Panorama Trail: artworks made of Stone leave their mark on the landscape |title=Main-Taunus-Kreis Jahrbuch 2021 |trans-title=Main-Taunus County Yearbook 2021 |location=Hofheim am Taunus |publisher=Kreisausschuss des Main-Taunus-Kreises |pages=139–142 pp. 140}}{{cite web |url=https://www.regionalpark-rheinmain.de/portfolio-item/panoramaweg-kreise-der-steine-und-ost-stelen-floersheim |title=Panoramaweg: Kreise der Steine und Ost-Stelen, Flörsheim |trans-title=Panorama trail: circles of stones and East- stelae, Flörsheim |website=www.regionalpark-rheinmain.de |publisher=Rhine-Main Regional park |access-date=2022-12-15}} Ingrid Hornef worked with a sandstone that weighed 12 tons and was 2.85 meters (roughly 9.35 feet) high.{{cite book |date=1999 |title=Bildhauersymposium Steine am Panoramaweg |trans-title=Sculpture symposium Stones on the Panorama Trail |location=Flörsheim |publisher=Regionalpark Rhein-Main |pages=17}}

In 2000, as part of the archeological Spessart-project in Aschaffenburg, she created the sandstone sculpture Siblings for the Jagdschloss Luitpoldhöhe in Rohrbrunn, in which she referred to a local legend: Two siblings found a cauldron of gold while playing, and when they tried to rescue it, it had disappeared again.{{cite book |last=Lauter |first=Marlene |date=2010 |chapter=Geschwisterpaar |trans-chapter=Pair of Siblings |title=Ingrid Hornef. Band 2: Kunst im öffentlichen Raum: Skulptur, Installation, Modell |trans-title=Ingrid Hornef. Volume 2: Art in public spaces: sculpture, installation, model |language=de |location=Wiesbaden |publisher=Carola Weber |isbn=978-3-00-030383-8 |pages=10}} The massive stone is split in two at the top, thus suggesting the two siblings. The bowl (the pot) rests on the two indicated heads of the siblings.

Common to all of the artist's large sculptures is the abstracted, block-like design: "Obvious is the artist's interest in a solid, block-like simplified body form - here, too, a kinship to archaic cultures - and the feeling for large surfaces as the boundary of a compact volume. Monumental, formally rigorous, concessionlessly abstract, the works make great demands on the viewer." (In German: "Offensichtlich ist das Interesse der Künstlerin an einer soliden, blockhaft vereinfachten Körperform – auch hier eine Verwandtschaft zu archaischen Kulturen – und das Gefühl für große Flächen als Begrenzung eines kompakten Volumens. Monumental, formal streng, konzessionslos abstrakt, stellen die Arbeiten hohe Anforderungen an den Betrachter.")

{{cite book |last=Teschner |first=Ursula |date=1994 |chapter=Ingrid Hornef |title=Ingrid Hornef: Plastiken und Skulpturen 1991–1994. (Eine Sammlung von Fremdtexten über die Künstlerin u. a. von Erich Fitzau und Ursula Teschner) |trans-title=Ingrid Hornef: Sculptures and Three-Dimensional Art.(A collection of third-party texts, among others texts by Erich Fitzau and Ursula Teschner) |language=de |location=Hofheim am Taunus |publisher=Ingrid Hornef |pages=4–5 pp. 5}}

As early as the mid-1990s, Hornef turned to Concrete Art and exclusively focused on line, surface and space in her works.

Now she creates reliefs. The artist's intuitive pencil drawings form the basis of these works.{{cite book |last=Möckel |first=Birgit |date=2010 |chapter=Linie, Fläche, Raum |trans-chapter=Line, Surface, Space |title=Ingrid Hornef. Volume 1: Linie, Fläche, Raum |trans-title=Ingrid Hornef. Volume 1: Line, Surface, Space |language=de |location=Wiesbaden |publisher=Carola Weber |isbn=978-3-00-030383-8 |pages=9}} The carrier material is MDF wood panels. They are drilled by the artist and painted in black or white. Wooden dowels and toothpicks are inserted into the holes create the lines. Also, the wooden dowels and toothpicks are painted to give the black and white contrast: "White wooden dowels instrument the black surfaces. Not dissimilar to small plugs, they sit at the corners of a fine white line, which, like in a circuit diagram, lays a strictly horizontal-vertical, but meandering path from left to right across the entire work. What becomes clear here also applies to the artist's later work: a strictly systematic arrangement of horizontals, verticals - later also of diagonals and spaces – determines the overall impression of the work, orchestrated by a binary black-and-white contrast." (In German: "Weiße Holzdübel instrumentieren die schwarz gehaltenen Flächen. Kleinen Steckern nicht unähnlich, sitzen sie an den Eckpunkten einer feinen weißen Linie, die wie in einem Schaltplan einen streng horizontal-vertikalen, jedoch auf und ab mäandernden Weg von links nach rechts über das gesamte Werk legt. Was hier deutlich wird, gilt auch für das spätere Werk der Künstlerin: Eine streng systematisch wirkende Anordnung von Waagerechten, Senkrechten – später auch von Diagonalen und Leerstellen – bestimmt den Gesamteindruck des Werks, instrumentiert durch einen binären Schwarz-Weiß-Kontrast."

{{Infobox artwork

|italic title=no

|title = Pictures of the artwork-serie Alea iacta est

|artist = Ingrid Hornef

|year=since 2002

|website= https://www.ingrid-hornef.de/arbeiten-aktuelles/alea-iacta-est

}}

Many Concrete Art artists use chance as an element of their artistic work.{{cite web|url=https://www.wz.de/kultur/kunst/zufall-oder-kunst-zufall-als-kunst_aid-27896021 |title=Schwer zu fassen: Zufall oder Kunst? Zufall als Kunst! Über die Ausstellung Die Kunst des Zufalls im Kunstmuseum Stuttgart |trans-title=Hard to grasp: Coincidence or art? Chance as art! About the exhibition The Art of Chance at the Kunstmuseum Stuttgart |date=2016-09-22 |website=Westdeutsche Zeitung |access-date=2022-12-18}} By allowing chance to take over the role of making decisions regarding the design of a work, it frees the artist from expressing their own sensitivities in their work and allows them to create objective art instead.

Ingrid Hornef is also fascinated by chance: "For me, chance means a liberation of subjective and emotional elements in favor of objective processes. Chance is not arbitrariness. It is subject to its conditions and this includes that I recognize its result. Similar to a scientific process I try to find answers to our limited knowledge about chance, the wide space of the possible. Over time, the question 'what is chance' has become more and more important to me." (In German: "Zufall bedeutet für mich eine Befreiung subjektiver und emotionaler Elemente zugunsten objektiver Prozesse. Zufall ist nicht Willkür. Er unterliegt seinen Bedingungen und dazu gehört, dass ich sein Resultat anerkenne. Ähnlich einem wissenschaftlichen Verfahren versuche ich Antworten auf unser begrenztes Wissen über den Zufall zu finden, den weiten Raum des Möglichen. Im Laufe der Zeit wurde die Frage ‚Was ist Zufall‘ immer wichtiger für mich."){{cite web |url=https://gruppe-konkret.info/ingrid-hornef |title=Künstler-Gruppe Konkret: Ingrid Hornef |trans-title=Artist Group Concrete: Ingrid Hornef |website=gruppe-konkret.info |access-date=2022-12-18}}

Since 2002, Hornef has devoted herself exclusively to researching this phenomenon. An expression of this is her series of works Alea iacta est, which she constantly expands, using an ordinary dice. Not only paintings, but also reliefs and three-dimensional objects are created. For the spatial installation Mikado at Skulpturen im Park in Mörfelden, she also used the dice as a random number generator: the 20 round logs, each three meters long, were divided into six segments, and Hornef let the cube decide which of them would be painted black. In her other works, she begins with an MDF board, which she paints black or white, and uses drilled holes, toothpicks, and Wooden dowels to structure the works. In a kind of controlled chance{{cite book |last=von Mengden |first=Lida |date=2016 |chapter=Spielfelder des Zufalls |trans-chapter=Random fields of play |title=Ingrid Hornef. Alea iacta est – Der Würfel ist gefallen. (Eine Sammlung von Fremdtexten über die Künstlerin, u. a. von Lida von Mengden und Albrecht Beutelspacher |trans-title=Ingrid Hornef. Alea iacta est – The die is cast. (A collection of third-party-texts on the artist, among others by Lida van Mengden and Albrecht Beutelspacher) |publisher=Ingrid Hornef |location=Hofheim am Taunus |isbn=978-3-00-052613-8 |pages=8–20 pp.12}} Hornef determines the basic rules of the work, such as the dimensions of the images, the lines (horizontal, vertical, or diagonal), and also the criteria for the elements to be thrown.{{cite book |last=Beutelspacher |first=Albrecht |date=2016 |chapter=Alea iacta est |title=Ingrid Hornef. Alea iacta est – Der Würfel ist gefallen. (Eine Sammlung von Fremdtexten über die Künstlerin, u. a. von Lida von Mengden und Albrecht Beutelspacher |trans-title=Ingrid Hornef. Alea iacta est – The die is cast. (A collection of third-party-texts on the artist, among others by Lida van Mengden and Albrecht Beutelspacher) |publisher=Ingrid Hornef |location=Hofheim am Taunus |isbn=978-3-00-052613-8 |pages=42–50 pp. 42}}

The artist mostly works with square panels on which she draws a square grid with a pencil that remains visible.{{cite book |last=von Mengden |first=Lida |date=2016 |chapter=Spielfelder des Zufalls |trans-chapter=Random fields of play |title=Ingrid Hornef. Alea iacta est – Der Würfel ist gefallen. (Eine Sammlung von Fremdtexten über die Künstlerin, u. a. von Lida von Mengden und Albrecht Beutelspacher |trans-title=Ingrid Hornef. Alea iacta est – The die is cast. (A collection of third-party-texts on the artist, among others by Lida van Mengden and Albrecht Beutelspacher) |publisher=Ingrid Hornef |location=Hofheim am Taunus |isbn=978-3-00-052613-8 |pages=8–20 pp.15}} It is noteworthy that the artist herself indirectly provides the technique for decoding the works by addressing chance as the medium of her work.

Albrecht Beutelspacher explains the method of working of Ingrid Hornef by using the artwork with the title Object 274: "If you concentrate on the horizontal lines at the top left of the picture, it becomes clear which numbers of dice have fallen: The first horizontal line below the square indicates that a one has fallen. In the following four squares, the lower horizontal line is missing: the four missing lines illustrate that a four has fallen. This is followed by two more horizontal lines, representing the number of eyes, two. A two follows for the blanks, a six for visible horizontal lines, and so on. [...] It is hard to see, but remarkable, that Ingrid Hornef had to throw the cube 118 times until the picture was finished." (In German: "Konzentriert man sich auf die horizontalen Linien oben links im Bild, erschließt sich, welche Augenzahlen gefallen sind: Die erste horizontale Linie unter dem Quadrat zeigt an, dass eine Eins gefallen ist. Bei den folgenden vier Quadraten fehlt der untere waagerechte Strich: die vier fehlenden Linien veranschaulichen, dass eine Vier gefallen ist. Darauf folgen zwei weitere waagerechte Linien, die für die Augenzahl Zwei stehen. Es folgen eine Zwei für die Leerräume, eine Sechs für sichtbare waagerechte Linien und so fort. […] Es ist schwer zu erkennen, aber beachtlich, dass Ingrid Hornef 118-mal den Würfel werfen musste, bis das Bild fertig war."){{cite book |last=Beutelspacher |first=Albrecht |date=2016 |chapter=Alea iacta est |title=Ingrid Hornef. Alea iacta est – Der Würfel ist gefallen. (Eine Sammlung von Fremdtexten über die Künstlerin, u. a. von Lida von Mengden und Albrecht Beutelspacher |trans-title=Ingrid Hornef. Alea iacta est – The die is cast. (A collection of third-party-texts on the artist, among others by Lida van Mengden and Albrecht Beutelspacher) |publisher=Ingrid Hornef |location=Hofheim am Taunus |isbn=978-3-00-052613-8 |pages=42–50 pp. 44}}

Thus, strictly geometric pictorial works are created that are reminiscent of circuit diagrams or path networks.{{cite book |date=2008 |title=Die Rationale II – Konstruktive, Konkrete Kunst. Katalog zur gleichnamigen Ausstellung im Frauenmuseum Bonn. Ausschnitt einer Rede von Birgit Möckel anlässlich einer Ausstellungseröffnung von Ingrid Hornef |trans-title=The Rationale II - Constructive, Concrete Art. Catalog for the exhibition of the same name at the Bonn Women's Museum. Excerpt of a speech by Birgit Möckel on the occasion of an exhibition opening by Ingrid Hornef |location=Bonn |publisher=Marianne Pfitzen; Bonn Women's Museum |isbn=978-3-940482-099}} Noted Art historian Birgit Möckel sums it up: "What at first glance appears to be the mysterious code of a system that has not yet been deciphered is the very concrete documentation of chance." (In German: "(In German: "Was auf den ersten Blick als geheimnisvoller Code eines noch nicht entschlüsselten Systems erscheint, ist die ganz konkrete Dokumentation des Zufalls."){{cite web |url=https://www.kunstverein-bellevue-saal.de/aktuelle-ausstellungen/detail/article/alea-iacta-est |title=Alea iacta est |website=kunstverein-bellevue-saal.de |access-date=2022-12-19}}

• 2008: Alea iacta est,{{cite web |url=https://www.erfurt.de/ef/de/service/aktuelles/pm/2008/101713.html |title=Alea iacta est – der Würfel ist gefallen: Ausstellung im Forum Konkrete Kunst |trans-title=Alea iacta est – the dice is cast |date=2008-02-22 |website=Stadt Erfurt |access-date=2022-11-10}} {{lang|de|Forum Konkrete Kunst}}, Erfurt, Germany
• 2014: Alea iacta est, Kunstverein Bellevue-Saal,{{cite web |url=https://www.kunstverein-bellevue-saal.de/archiv/2014/detail/article/alea-iacta-est/?tx_ttnews%5BpS%5D=1668077400&tx_ttnews%5BbackPid%5D=257&cHash=3f9ded8dd8 |title=Alea iacta est: Ingrid Hornef |website=Kunstverein Bellevue-Saal |access-date=2022-11-10}} Wiesbaden, Germany
• 2018: Ingrid Hornef – Ordnung: Nichts als Zufall,{{cite web|url=https://www.mathematikum.de/ausstellungen/bisherige-ausstellungen/moderne-math-kunst/ordnung-nichts-als-zufall |title=Ingrid Hornef – Ordnung: Nichts als Zufall |trans-title=Ingrid Hornef – Order: Nothing but Chance |website=Mathematikum |access-date=2022-11-20}} Museum Mathematikum, Giessen, Germany
• 2020: Zeitgleich: Spielfelder des Zufalls,{{cite web | url=https://stadtmuseum.hofheim.de/sonderausstellungen/archiv/sonderausstellungen-2016-2020 |title=Sonderausstellungen 2016 bis 2020 |trans-title=Special exhibitions from 2016 to 2020 |website=stadtmuseum.hofheim.de |access-date=2024-09-26}} Stadtmuseum Hofheim, Hofheim
• 2022: Alea iacta est, LAC, Lieu d’Art Contemporain,{{cite web |url=https://lac-narbonne.art/alea-iacta-est-les-des-sont-jetes |title=Alea iacta est (les dés sont jetés): Ingrid Hornef |trans-title=Alea iacta est (the die is cast) |website=lac-narbonne.art |access-date=2022-11-10}} Sigean, France
• 2024: Alea iacta est,{{cite web |url=https://www.galerie-leonhard.at/kunstler/Ingrid-hornef |title=Ingrid Hornef |website=galerie-leonhad.at |access-date=2024-09-26}} Galerie Leonhard, Graz, Austria

• 2008: Rationale II,{{cite book |date=2014 |title=33 Jahre Frauenmuseum: Ausstellungsliste |trans-title=33 years of the women's museum bonn: List of exhibitions |publisher=Marianne Pitzen, Bonn Women's Museum |place=Bonn |isbn=978-3-940482-71-6}} Bonn Women's Museum, Bonn, Germany
• 2008: Ein Jahr: 31 Positionen – 30 Räume, Museum Modern Art Hünfeld, Hünfeld, Germany
• 2009: Figürlich, Abstrakt, Konkret: Grenzgänger der Konkreten Kunst,{{cite web |url=https://www.walkmuehle.net/VERANSTALTUNGEN/2009/2009Konkret.html |title=Figürlich, Abstrakt, Konkret: Grenzgänger der Konkreten Kunst |trans-title=Figurative, Abstract Concrete: Frontier artists of Concrete Art |website=Künstlerverein Walkmühle |access-date=2022-11-27}} Künstlerverein Walkmühle, Wiesbaden, Germany
• 2009: Kunst geht in die Stadt – 90 Jahre Bauhaus. Hommage an eine Gründergeneration zum Bauhausjahr 2009,{{cite web |url=https://www.erfurt.de/ef/de/service/aktuelles/pm/2009/102715.html |title=Die Kunst geht in die Stadt. 90 Jahre Bauhaus. Hommage an eine Gründergeneration |trans-title=Art goes to town - 90 years of Bauhaus. Homage to a founding generation for the Bauhaus Year 2009 |date=2009-04-23 |website=Stadt Erfurt |access-date=2022-11-27}} {{lang|de|Forum Konkrete Kunst}}, Erfurt, Germany
• 2011: Positionen – 30 Jahre gruppe konkret,{{cite web |last=zu Mecklenburg |first=Christina |url=https://ga.de/news/kultur-und-medien/regional/gruppe-konkret-erinnert-an-ihre-gruendung_aid-40705127 |title=gruppe konkret erinnert an ihre Gründung |trans-title=Group concrete recalls its founding |date=2011-12-10 |website=General-Anzeiger |access-date=2022-11-27}} Kunstforum, Bonn, Germany
• 2012: Rationale III – Raum und Bau,{{cite book |date=2014 |title=Rationale III - Raum und Bau |trans-title=Rationale III - Space and construction |publisher=Marianne Pitzen, Bonn Women's Museum |place=Bonn |isbn=978-3-940482-55-6}} Bonn Women's Museum, Bonn, Germany
• 2013: Die Kunst geht in die Stadt,{{cite web |url=https://www.frankenpost.de/inhalt.kunst-und-kultur-die-kunst-passiert-im-kopf.c3469bfd-17fb-45fb-9e4d-1a9fa0a2553c.html |title=Kunst und Kultur: Die Kunst passiert im Kopf |trans-title=Art and culture: Art happens in the mind |last=Sziegoleit |first=Ralf |date=2013-10-05 |website=Frankenpost |access-date=2022-11-27}} Kunsthaus Rehau, Institut für konstruktive Kunst und Konkrete Poesie, Rehau, Germany
• 2014: Zum Zufall,{{cite web |url=https://www.alt.kvkhpotsdam.de/archiv/ausstellungsarchiv/ausstellungsarchiv-2014/zum-zufall |title=Zum Zufall |trans-title=about chance |website=Kunstverein Kunsthaus Potsdam |access-date=2022-11-29}} Kunstverein Kunsthaus Potsdam, Germany
• 2016: Rythme et Géometrie,{{cite web |url=hnterttps://amismuseechateauroux.files.wordpress.com/2016/06/exposition-rythme-et-gc3a9omc3a9trie-chc3a2teauroux.pdf |title=Exposition Rythme et Géometrie |trans-title=Exposition Rhythm and Geometry |date=2016-06-17 |website=Amis des Musées de Chateauroux |access-date=2022-11-29 |format=PDF; 1,3 MB}} Musée Bertrand, Châteauroux, France
• 2017: Gäste Konkret,{{cite web |url=https://www.skk-soest.de/veranstaltung/ausstellung-hellweg-konkret-gaeste-konkret |title=Ausstellung Hellweg Konkret: Gäste Konkret |trans-title=Exhibition Hellweg Konkret: Guests Concrete |website=Stiftung für konzeptionelle Kunst |access-date=2022-11-29}} Sammlung Schroth, Hellweg Konkret, Soest, Germany
• 2018: Gruppenausstellung der Nominierten zum 5. Internationalen André-Evard-Preis,{{cite web |url=https://www.weltkunst.de/veranstaltungen/riegel-kaiserstuhl/ausstellung/5-internationaler-andre-evard-preis-der-messmer-foundation |title=Ausstellung: 5. Internationaler André-Evard-Preis der messmer foundation |trans-title=Exhibition: 5th messmer foundation international andré evard award |website=weltkunst.de |access-date=2023-03-09}} Kunsthalle Messmer, Riegel am Kaiserstuhl, Germany
• 2018: Exhibition Paris V City Hall,{{cite web |url=https://www.math-art.eu/ParisV-2018.php |title=Exhibition at the Paris 5th City Hall |website=www.math-art.eu |access-date=2022-12-11}} European Society for Mathematics and the Arts (ESMA), Paris, France
• 2019 – continuing: Participation in Group-Shows at the Salon des Réalités Nouvelles, Paris, France
• 2019: Cinétique, (Traveling exhibition u. a. in Paris, Budapest, Vienna, Kranj, the town of Stoffen und Munich ({{lang|de|Üblacker-Häusl}})){{cite web |url=https://www.artipool.de/ausstellung/31025 |title=Ausstellung in München: Cinétique, Internationale Wanderausstellung |trans-title=Exhibition in Munich: Cinétique, International Traveling Exhibition |website=artipool.de |access-date=2022-11-26}}
• 2021: 40 Jahre Gruppe Konkret,{{cite web |url=https://gruppe-konkret.info/ausstellungen-der-gruppe-konkret |title=Ausstellungen der Gruppe Konkret |trans-title=Exhibitions of the group concrete |website=Gruppe Konkret |access-date=2022-11-29}} Kunstforum Bonn, Germany
• 2021: Von Gebliebenen und Heimkehrern,{{cite web |url=https://www.kunstverein-friedberg.de/ausstellungen/von-gebliebenen-und-heimkehrern |title=Von Gebliebenen und Heimkehrern |trans-title=Of those who stayed and those who returned home |website=Kunstverein Friedberg |access-date=2024-09-26}} Kunstverein Friedberg, Friedberg
• 2022: Small Structures,{{cite web |url=https://sehsaal.at/small-structures |title=Small Structures |website=sehsaal.at |access-date=2024-09-26}} Sehsaal, Vienna, Austria
• 2023: MADI Universe 77: miniMADImax,{{cite web|url=https://artfacts.net/exhibition/madi-universe-77-minimadimax/1085770 |title=MADI Universe 77: miniMADImax |website=artfacts.net |access-date=2024-09-26}} Saxon Art Gallery, Budapest, Hungary
• 2023: Encore nous ...:Biennale Internationale d’art non-objectif de la ville Pont de Claix,{{cite web |url=https://p2c-pontdeclaix.fr/expositions-pont-de-claix-art-non-objectif |title=Expositions: Pont de Claix et les Moulins de Villancourt au cœur de l'art non-objectif |trans-title=Exhibitions: Pont de Claix and Moulins de Villancourt at the heart of non-objective art |website=site of the town of Pont-de-Claix |date=2023-10-11 |access-date=2024-09-26}} Moulins de Villancourt, Le Pont-de-Claix, France
• 2023: Kunstspektrale,{{cite web|url=https://museum-oberlausitz.de/sonderausstellung/kunstspektrale |title=Sonderausstellung:Kunstspektrale |trans-title=Special exhibition:Kunstspektrale |website=museum-oberlausitz.de |access-date=2024-09-26}} (A collaboration with the Görlitz Collections for History and Culture and the Foundation for Art and Culture in Upper Lusatia), Königshain Fortress, Königshain, Germany
• 2023: Curating - Creating,{{cite web |url=https://artfacts.net/exhibition/curating-creating/1133701 |title=Curating - Creating |website=artfacts.net |access-date=2024-09-26}} Galerie Abstract Project, Paris, France
• 2023: Réalités Nouvelles: Hors les murs (Réalités Nouvelles: Outside the Walls),{{cite web |url=https://www.abstract-project.com/RNS/kyoto.htm |title=Réalités Nouvelles: Hors les murs |trans-title=Réalités Nouvelles: Outside the Walls |website=abstract-project.com |access-date=2024-10-02}} kokoka Kyoto International Community House, (Paris and Kyoto are Sister cities), Kyoto, Japan
• 2023: 77. Réalités Nouvelles,{{cite web |url=http://www.realitesnouvelles.org/site_2020/artistes_2023.htm |title=Artistes 2023 |website=realitesnouvelles.org |access-date=2024-10-02}} Salon des Réalités Nouvelles, Paris, France
• 2024: Schöne Aussichten,{{cite web |url=https://www.kunstverein-bellevue-saal.de/aktuelle-ausstellungen/detail/article/schoene-aussichten/?tx_ttnews%5BbackPid%5D=153&cHash=2a0b88613b |title=Schöne Aussichten |trans-title=beautiful perspectives |website=kunstverein-bellevue-saal |access-date=2024-10-02}} Kunstverein Bellevue-Saal, Wiesbaden, Germany
• 2024: Nicht abstrakt, Ganz konkret,{{cite web|url=https://www.osthessen-zeitung.de/einzelansicht/news/2024/mai/nicht-abstrakt-ganz-konkret-vernissage-am-sonntag.html |title=Nicht abstrakt, ganz konkret. Vernissage am Sonntag |trans-title=Not abstract, but concrete. Vernissage on Sunday |website=Osthessenzeitung |date=2024-05-23 |access-date=2024-10-02}} Museum Modern Art, Hünfeld, Germany
• 2024: Réalités Nouvelles: Hors les murs,{{cite web |url=https://realitesnouvelles.blogspot.com/2024/05/realites-nouvelles-musee-wu-dengyi.html |title=Réalités Nouvelles: Mussee Wu Dengyi, Taiwan |website=realitesnouvelles.blogspot.com |date=2024-05-17 |access-date=2024-10-02}} Wu Dengyi Art Museum, Taipei, Taiwan
• 2024: Zeigt euch konkret!,{{cite web |url=https://www.kultur-mv.de/ausstellungen/zeigt-euch-konkret.html |title=Zeigt euch konkret! |trans-title=Show yourselves concrete |website=www.kultur-mv.de |access-date=2024-10-02}} Kunstverein Willigrad, Lübstorf, Germany
• 2024: 3D. Wegweisende Plastik der konkreten Gegenwart,{{cite web|url=https://www.skk-soest.de/en/veranstaltung/eroeffnung-der-ausstellung-3d-wegweisende-plastik-der-konkreten-gegenwart |title=Eröffnung der Ausstellung 3D. Wegweisende Plastik der konkreten Gegenwart |trans-title=Opening of the exhibition 3D. Pioneering sculpture of the concrete present |website=ssk-soest.de |access-date=2024-09-09}} Museum Wilhelm Morgner, Soest, Germany

• 2002: Fernrohre (Tele-Visionen),{{cite web |url=https://www.regionalpark-rheinmain.de/portfolio-item/fernrohre-floersheim |title=Fernrohre Flörsheim |trans-title=Telescopes Flörsheim |website=Regionalpark Rhine-Main |access-date=2022-11-24}} Regionalpark Rhein-Main, Flörsheim, Germany
• 2007: Tele-Visionen II, Hamburg Observatory, Hamburg, Germany
• 2009: Blaue Blume,{{cite web |url=https://hypertours.com/tours/overview.php?term=skulpturenpark2008 |title=Skulpturen im Park im Rausch der Farben. 11. Skulpturenpark 2008 der Stadt Mörfelden-Walldorf (mit Fotos der Ausstellung) |trans-title=Sculptures in the Park in the Intoxication of Colors. 11th Sculpture Park 2008 of the City of Mörfelden-Walldorf (with photographs of the artworks) |website=Heinz Brennecke |access-date=2022-11-29}} Gallery of the town of Mörfelden-Walldorf, Germany
• 2010: Fernweh,{{cite web |url=https://www.shz.de/lokales/sylt/artikel/lichtwellen-bis-ans-ende-der-welt-41261889 |title=Wenningstedt: Lichtwellen bis ans Ende der Welt |trans-title=Wenningstedt: Light waves all the way to the end of the world |last=Schmale |first=Uwe |date=2010-04-13 |website=Sylter Rundschau |access-date=2022-11-29}} Skulpturenpark Meerseits, Wennigstedt, Sylt, Germany
• 2012: What about the Others (Installation for the open-air exhibition Ark 2012),{{cite web |url=https://www.op-online.de/region/seligenstadt/katalog-ausstellung-arche-2012-seligenstadt-2427200.html |title=Katalog zur Ausstellung Arche 2012 |trans-title=Catalog of the exhibition Ark 2012 |date=2012-07-23 |website=Oberhessische Presse |access-date=2022-12-16}} Seligenstadt, Germany
• 2015: Mikado,{{cite web |url=http://welt-der-form.net/Skulpturen_im_Park_2015/index.html |title=Skulpturen im Park 2015: Photo documentation of the exhibition |trans-title=Sculptures in the park |last=Emden-Weinert |first=Thomas |website=welt-der-form.net |access-date=2022-11-29}} Gallery of the town of Mörfelden-Walldorf, Germany
• 2024: Mikado,{{cite web |url=https://sculpturesenliberte.com/les-artistes |title=Sculptures en liberté: Les Artistes: Ingrid Hornef |trans-title=Sculptures in the wild: Artists: Ingrid Hornef |website=sculpturesenliberte.com |access-date=2024-10-04}} permanent installation in Altier, France

• Museum Mathematikum,{{cite book |date=2016 |title=Ingrid Hornef: Alea iacta est - der Würfel ist gefallen. Mit Texten vonu. a. Lida van Mengden and Albrecht Beutelspacher |trans-title=Ingrid Hornfef: Alea iacta est - the die is cast. With texts from among others Lida van Mengden and Albrecht Beutelspacher |language=de |location=Hofheim am Taunus |publisher=Ingrid Hornef |page=97 |isbn=978-3-00-052613-8}} Giessen, Germany
• Centre pour le Constructivisme et l’Art Concret,{{cite web |url=https://www.denheeck.be/HANDEL_FOTO__en_TXT/stock/INGRID%20HORNEF/ingrid%20hornef.htm |title=Ingrid Hornef |website=Zentrum für Konstruktivismus und der konkreten Kunst Bornem |access-date=2022-11-26}} Bornem, Belgium
• Palatinate Gallery of Art/Pfalzgalerie, Kaiserslautern, Germany
• Museum Modern Art Hünfeld, Hünfeld, Germany
• Bonn Women's Museum, Bonn, Germany
• Kulturhistorisches Museum Görlitz
• Musée Tavet-Delacour Pontoise, France
• Centre d’Art Contemporain Frank Popper, Marcigny, France
• LAC, Lieu d’art Contemporain, Sigean, France
• Artothek, Stadt Wiesbaden

• {{cite book |date=1994 |title=Ingrid Hornef: Plastiken und Skulpturen 1991–1994. Mit Fremdtexten von u. a. Erich Fitzau und Ursula Teschner |trans-title=Ingrid Hornef: Sculptures and Three-Dimensional Art. With third-party-texts of among others Erich Fitzau and Ursula Teschner |language=de |location=Hofheim am Taunus |publisher=Ingrid Hornef}}
• {{cite book |date=2002 |title=Skulpturenmeile: Land schafft Kunst, 18.8. – 29.9.2002 |trans-title=Sculpture Mile: Land Creates Art, 8/18 - 9/29/2002 |language=de |location=Hofheim am Taunus |publisher={{lang|de|:de:Deutsche Gesellschaft für Gartenkunst und Landschaftskultur}}, Landschaftsverband Hessen}}
• {{cite book |date=2008 |title=Die Rationale II – Konstruktive, Konkrete Kunst. Katalog zur gleichnamigen Ausstellung im Frauenmuseum Bonn |trans-title=The Rationale II - Constructive, Concrete Art. Catalog for the exhibition of the same name at the Bonn Women's Museum |location=Bonn |publisher=Marianne Pfitzen; Bonn Women's Museum |isbn=978-3-940482-099}}
• {{cite book |date=2009 |title=Figürlich, Abstrakt, Konkret: Grenzgänger der Konkreten Kunst |trans-title=Figurative, Abstract Concrete: Frontier artists of Concrete Art |language=de |location=Wiesbaden |publisher=Kunstverein Walkmühle}}
• {{cite book |date=2010 |title=Ingrid Hornef |language=de |location=Wiesbaden |publisher=Carola Weber |isbn=978-3-00-030383-8}} Two volumes: 1, Linie, Fläche, Raum (Volume 1: Line, Surface, Space); 2, Kunst im öffentlichen Raum: Skulptur, Installation, Modell (Volume 2 Art in public spaces: sculpture, installation, model)
• {{cite book |date=2012 |title=Die Rationale III – Raum und Bau. Katalog zur gleichnamigen Ausstellung im Frauenmuseum Bonn |trans-title=The Rationale III - Space and Construction. Catalog for the exhibition of the same name at the Bonn Women's Museum |location=Bonn |publisher=Marianne Pfitzen; Bonn Women's Museum |isbn=978-3-940482-55-6}}
• {{cite book |date=2016 |title=Ingrid Hornef: Alea iacta est – Der Würfel ist gefallen. Mit Texten von u. a. Lida van Mengden and Albrecht Beutelspacher |trans-title=Ingrid Hornef: Alea iacta est - the die is cast. With texts of among others Lida van Mengden and Albrecht Beutelspacher |language=de |location=Hofheim am Taunus |publisher=Ingrid Hornef |isbn=978-3-00-052613-8}}

{{Reflist}}

• {{DNB-Portal|1042988218 |NAME=Ingrid Hornef}}
• [https://www.ingrid-hornef.de/ website of Ingrid Hornef]
• [https://kunstaspekte.art/person/ingrid-hornef Ingrid Hornef at kunstaspekte.de]
• [https://artfacts.net/artist/ingrid-hornef/179782 Ingrid Hornef at artfacts.net]
• [https://www.youtube.com/watch?v=SYVNAo9ICNQ 75 years after the 2nd World War: video of the stone sculpture workshop 2019 in Chouni]

{{Authority control}}

{{DEFAULTSORT:Hornef, Ingrid}}

Category:Concrete art

Category:Mathematical artists

Category:German installation artists

Category:Applications of randomness

Category:Minimalist artists

Category:20th-century German women artists

Category:21st-century German women artists

Category:German women conceptual artists

Category:German modern painters

Category:German contemporary artists

Category:1940 births

Category:Living people