Hans Grauert

{{Use dmy dates|date=November 2022}}

{{Short description|German mathematician (1930–2011)}}

{{Infobox scientist

| name = Hans Grauert

| image = Hans Grauert.jpeg

| image_size = 200px

| caption = Grauert in Moscow, 1966

| birth_date = {{Birth date|1930|2|8|df=y}}

| death_date = {{Death date and age|2011|9|4|1930|2|8|df=y}}

| nationality = German

| field = Mathematician

| alma_mater = University of Münster

| work_institutions = University of Göttingen

| doctoral_advisor = Heinrich Behnke
Beno Eckmann

| doctoral_students = Wolf Barth

| known_for = Complex analytic space
Grauert's theorem
Andreotti–Grauert theorem
{{no wrap|Grauert–Riemenschneider vanishing theorem}}

| awards = Cantor medal (2008)
ICM Speaker (1958, 1962 and 1968)

}}

Hans Grauert (8 February 1930 in Haren, Emsland, Germany – 4 September 2011) was a German mathematician. He is known for major works on several complex variables, complex manifolds{{cite journal | last1 = Huckleberry | first1 = A | year = 2009 | title = Hans Grauert: Mathematiker Pur | url = https://www.ams.org/notices/200901/tx090100038p.pdf | journal = Notices of the American Mathematical Society | volume = 55 | issue = 1| pages = 38–41 }} and the application of sheaf theory in this area, which influenced later work in algebraic geometry.Bauer, I. C. et al. (2002) [https://books.google.com/books?id=5JcuwWqVx7UC&q=bauer+grauert+geometry Complex geometry: collection of papers dedicated to Hans Grauert], Springer. Together with Reinhold Remmert he established and developed the theory of complex-analytic spaces.{{cite journal |last1=Huckleberry |first1=Alan |title=Hans Grauert (1930–2011) |journal=Jahresbericht der Deutschen Mathematiker-Vereinigung |year=2013 |volume=115 |pages=21–45 |doi=10.1365/s13291-013-0061-7|arxiv=1303.6933|s2cid=119685542 }} He became professor at the University of Göttingen in 1958, as successor to C. L. Siegel. The lineage of this chair traces back through an eminent line of mathematicians: Weyl, Hilbert, Riemann, and ultimately to Gauss.Grauert, H. (1994) [https://www.amazon.de/exec/obidos/ASIN/3540571078/prufungsfforu-21 Selected Papers], Springer. Until his death, he was professor emeritus at Göttingen.

Grauert was awarded a fellowship of the Leopoldina{{Cite web | last =O'Connor | first =J.J. |author2=Robertson, E.F. | title =Hans Grauert | publisher =MacTutor | date =November 2006 | url=https://mathshistory.st-andrews.ac.uk/Biographies/Grauert/

| accessdate =22 December 2009 }} and the von Staudt Prize.