user:Michael Hardy

{{award2|image=Original_Barnstar.png|size=100px|topic=The Original Barnstar|text=This barnstar is given to recognize particularly fine contributions to Wikipedia, and to let you know that your hard work is seen and appreciated. evrik 23:15, 10 August 2006 (UTC) }}

{{award2|image=Barnstar-atom3.png|size=100px|topic=The E=MC² Barnstar|text=For making mathematical and statistical articles readable for the layperson. Specifically, I ran across Second-order logic on random article and was extremely impressed by your work. Keep it up! Teke 18:37, 25 August 2006 (UTC) }}

Thank you! Michael Hardy 19:24, 25 August 2006 (UTC)

:Thank you. Michael Hardy 22:49, 5 January 2007 (UTC)

: Thank you. Michael Hardy 06:08, 29 June 2007 (UTC)

Thank you. Michael Hardy 18:06, 2 September 2007 (UTC)

• The nature of libel in Wikipedia articles

:"In ABCology, an X is a blah blah blah."

is superior to

:"X is a term used by ABCologists to describe a blah blah blah."

Here's another example (fictitious---a composite of several actual instances).

Writing hyphenated, logical, cats, evolutionary, rabbinical, Egyptian, dogmatic, apocryphal, fur trader, antagonistic, algebraic, legendary etc., makes the whole word, not just the part in the brackets, appear as a clickable link, which links to the article whose title is in the brackets. The more complicated form can be used for things like philosophies.

Also, one does not need underscores as in prime_number_theorem or prime number theorem.

templates within templates

: $Y\; \backslash \; \backslash stackrel\{\backslash mathrm\{def\}\}\{=\}\backslash \; 1(y^*\; >0).$

• Wikipedia:Graphic Lab/Images to improve
• http://meta.wikimedia.org/wiki/Help:Displaying_a_formula
• Wikipedia:Categories, lists, and series boxes
• List of mathematics categories
• [http://toolserver.org/~mzmcbride/cgi-bin/watcher.py How many people are watching a page?]
• Wikipedia:Donating_copyrighted_materials

• Wikipedia:WikiProject Mathematics • Talk
• Wikipedia:WikiProject Mathematics/Typography • talk
• Wikipedia:WikiProject Mathematics/Current activity
• Wikipedia:WikiProject Mathematics/Nav
• Wikipedia:Pages needing attention/Mathematics/Lists
• Wikipedia:WikiProject Mathematics/Graphics, Wikipedia:Requested pictures
• Wikipedia:WikiProject Mathematics/Article alerts
• User talk:Nageh/mathJax
• [http://www.mediawiki.org/wiki/Requests_for_comment/Reduce_math_rendering_preferences http://www.mediawiki.org/wiki/Requests_for_comment/Reduce_math_rendering_preferences]
• User:Mathbot/Changes to mathlists
• :Category:Mathematics articles needing expert attention
• Wikipedia:WikiProject_Mathematics/Article_alerts/Archive
• User:AlexNewArtBot/MathSearchResult
• Wikipedia:WikiProject Deletion sorting/Mathematics
• The most colossal instance of sheer missing of the point, done with truly breathtaking unawareness of what one is doing, among all Wikipedia edits, may be [https://en.wikipedia.org/w/index.php?title=Wikipedia:Articles_for_deletion/Proof_that_22/7_exceeds_%CF%80&diff=43974632&oldid=43943370 this].

• Wikipedia:WikiProject Statistics • Talk

User:Michael Hardy/Lists are better than categories

Find out from [http://stats.grok.se this site]. <--- This one hasn't been working lately, except for dates before January 20, 2016.

: or this one: [https://analytics.wmflabs.org/demo/pageview-api this one: https://analytics.wmflabs.org/demo/pageview-api]. <--- Also no longer works

• [http://www.netsoc.tcd.ie/~mu/wiki http://www.netsoc.tcd.ie/~mu/wiki]

John Gillespie Magee, Junior, self-evidence,

tidal resonance, Woods Hole Oceanographic Institution,

list of religious topics

(Many others have contributed to that one.)

list of optical topics, iridescence, sylvanshine,

Foundation for the Advancement of Art,

Elisha Otis, Roman Republic (19th century), effect of sun angle on climate, Marlon Knauer, Shyamala Rajender v. University of Minnesota, Karlis Kaufmanis, Admission to the Union, Line house, History of slavery in Vermont, History of slavery in Minnesota, Collins–Valentine line, Vermont v. New Hampshire, Sporhase v. Nebraska ex rel. Douglas, Oscillating gene, International Boundary Commission, Resignation from the United States Senate, National Master Freight Agreement, Prince of Darkness

list of statistical topics,

Gauss–Markov theorem,

Completeness (statistics), Sufficiency (statistics),

logit, Kolmogorov's zero-one law,

martingale, margin of error,

zeta distribution, Zipf's law, confidence interval,

Bruno de Finetti, Maxwell's theorem,

law of total probability, law of total expectation,

law of total variance, Galton–Watson process,

coherence (philosophical gambling strategy),

cumulant, canonical correlation, Wishart distribution,

Rao–Blackwell theorem, Student's t-distribution,

Wiener process, errors and residuals in statistics,

Seymour Geisser, prediction interval, rankit,

continuity correction, Studentized residual, Studentized range, Cramér–Rao inequality

Francis Ysidro Edgeworth

(a stub; if it's a long article when you read this, then

someone else has contributed),

ancillary statistic, empirical Bayes method,

Herbert Robbins, memorylessness, factorial moment,

rule of succession, conditional independence,

pairwise independence, prior probability distribution,

infinite divisibility, a term used in physics, probability

theory, and several other disciplines,

Schrödinger method, Vandermonde's identity,

an inequality on location and scale parameters,

compound Poisson distribution,

In estimation of covariance matrices, I describe what

seems to me to be a surprisingly subtle and elegant

application of linear algebra. I have no idea who

originated it; I seem to recall that it is in Morris Eaton's

book on multivariate statistics, and I suppose it is in

lots of others. In that argument you find out why it is

sometimes better to view a scalar as the trace of a

1×1 matrix than as a mere scalar and then to apply

certain matrix decompositions to it.

Lévy process, Wigner semicircle distribution,

multinomial distribution, Ewens's sampling formula, imputation (statistics), law of total cumulance, copula (statistics) (incorporating some material from Sklar's theorem, which was created by User:Oo64eva and is now a redirect page), normally distributed and uncorrelated does not imply independent, list of stochastic processes topics, method of moments (statistics), method of moments (probability theory)

Eduard Helly, David Blackwell (both stub articles; if they're more than stubs when you see them, then more recent edits have been done)

le Cam's theorem, McCullagh's parametrization of the Cauchy distributions, Lilliefors test, empirical distribution function--still a stub article at this time, Poisson regression, Shapiro–Wilk test, location-scale family, Behrens–Fisher problem (now still a stub), Hausdorff moment problem, Hamburger moment problem, Stieltjes moment problem, Chinese restaurant process, indecomposable distribution, Wick product, Robbins lemma, Fisher's inequality, Chernoff's distribution (a stub, but it clearly gives the definition), Lack-of-fit sum of squares, Bhatia–Davis inequality, Samuelson's inequality, Popoviciu's inequality on variances, Raikov's theorem, An Essay towards solving a Problem in the Doctrine of Chances, Lester Dubins, Behrens–Fisher distribution, Minimum chi-square estimation, Poisson point process, Canonical link (a disambiguation page), Markov chain central limit theorem,

inequality of arithmetic and geometric means,

incidence algebra, Euler characteristic,

stereographic projection, common logarithm,

Dirichlet kernel,

exponential growth

(a concept that "laymen" take to mean very fast

growth, but which has a technical definition

that need not imply great rapidity)

empty product This explains why, when you

multiply no numbers at all, you get 1, and why

0⁰ is almost always 1, and should

be taken to be 1 for the purposes of set theory,

combinatorics, probability, and power series.

binomial type, Sheffer sequence,

umbral calculus, Bell numbers, Hermite polynomials,

Chebyshev polynomials, Bernoulli polynomials,

Gian-Carlo Rota

Archimedes Palimpsest This one mentions ancient

history, mathematics, physics, engineering, an art

museum, a federal lawsuit, and a very old hierarchical

religious organization, in a very short space, without

undue cramming;

How Archimedes used infinitesimals, Archimedean property,

Eric Temple Bell, Arthur Cayley,

Riemann–Stieltjes integral, bounded variation,

Ferdinand von Lindemann, Charles Hermite,

orthogonal polynomials (Do not move that article

to "orthogonal polynomial" under a delusion that that would

conform to the convention of titling an article "dog" rather

than "dogs". That would be absurd. There is no such thing

as an orthogonal polynomial; there is such a thing as

orthogonal polynomials.),

pointwise convergence, Bernstein polynomial,

George Boolos, Cantor's theorem,

Löwenheim–Skolem theorem, second-order logic (much expanded by others since I started it)

Cantor's first uncountability proof. This proof shows that the set of all real numbers is uncountable, but this proof is not a diagonal argument! This article has since been sweepingly revised by user:RJGray, who added material on a dispute over whether the proof is constructive and material derived from letters between Cantor and colleagues.

inclusion-exclusion principle,

linearly ordered group, Boolean prime ideal theorem,

uniform norm, Galton–Watson process,

coherence (philosophical gambling strategy),

dominated convergence theorem,

Robertson–Seymour theorem, double integral

(not the same as an "iterated integral"; see the article),

Fubini's theorem, mathematical logic,

Girard Desargues, Desargues' theorem,

parallelogram law, Hamel basis,

König's theorem, Schur complement

(that article needs more work), combinatorial species

(I left this one a stubby article that was barely a

definition and two or three more-or-less obvious examples;

AlexG has since added an account of operations

on combinatorial species and lots of essential facts),

A simple proof that 22/7 exceeds pi, Putnam Competition,

Stone's representation theorem for Boolean algebras,

Separation of variables,

moment (a disambiguation page),

list of mathematical examples (still in its infancy)

Möbius transform, cross-ratio, Morera's theorem,

Mahler's theorem, Cauchy principal value,

Pincherle derivative

Radius of convergence -- This article includes an example

of the fact that complex numbers are sometimes simpler

than real numbers; they allow us to quickly find the radius

of convergence of a power series in which the coefficients

are Bernoulli numbers. (As you see from the previous

sentence, I firmly believe in splitting infinitives on

occasion.) Faà di Bruno's formula,

I moved the anonymously written "absolutely continuous"

page to absolute continuity and rewrote it from

scratch, including both absolute continuity of real

functions, and absolute continuity of measures and the

Radon–Nykodym theorem.

An infinitely differentiable function that is not analytic

-- Although this is merely the usual example, I explained

(albeit tersely, so far) its relevance to Schwartz's theory

of generalized functions: One can construct test functions

(i.e., infinitely differentiable functions with bounded

support) with prescribed behavior on an interval. The

existence of such functions must be known before we can

confidently say that Schwartz's whole theory is not vacuous.

Moreau's necklace-counting function, cyclotomic identity,

proof that holomorphic functions are analytic,

branch point, Bell polynomials, Pedoe's inequality,

Hadwiger's theorem

(a stub; if it's a long article when you read this, then

someone else has contributed), defect (geometry)

(a fairly terse article so far....), Dandelin spheres,

matrix exponential (others have added material to

that one), noncrossing partition,

uses of trigonometry, Bohr–Mollerup theorem,

characterization (mathematics),

list of Boolean algebra topics, germ (mathematics),

Lissajous curve -- someone has since edited that one

by adding illustrations, Cauchy product, Gibbs phenomenon

-- a number of people have worked on this one,

Schrödinger method, Vandermonde's identity,

list of Fourier analysis topics, Muirhead's inequality, Stanley's reciprocity theorem, exponential formula, method of distinguished element, Stirling transform, osculating circle, list of circle topics,

list of knot theory topics, Cantor's back-and-forth method, list of set theory topics, rencontres numbers, Bernstein's theorem, multiplicities of entries in Pascal's triangle, Dobinski's formula, Brahmagupta–Fibonacci identity (originally titled Fibonacci's identity; that is now a disambiguation page), alternating permutation, spread polynomials, Faulhaber's formula, Appell sequence, caloric polynomial, Johan Frederik Steffensen---stubby so far..., Lester's theorem, Monge's theorem, polar sine, Hermite–Hadamard inequality, Steiner inellipse, Marden's theorem, (Lommel–Weber function After I created this, it was found that three articles on this topic existed under different titles, which then got merged, so this page now redirects to another.),

Regiomontanus' angle maximization problem, Bloch's theorem (complex variables),

List of topics named after Bernhard Riemann, Cavalieri's principle, Napkin ring problem (on a startling result in elementary geometry; the natural way to prove this is by Cavalieri's principle, but some authors perversely persist in relying only on other methods), Lune of Hippocrates, Mollweide's formula, Bonse's inequality,

Landau's algorithm (a stub article that identifies the purpose and the creator of the algorithm but doesn't describe it; hopefully others, if not I, will expand it), List of topics named after Fibonacci, List of topics named after Augustin-Louis Cauchy, Harold Edwards (mathematician), nLab, Erdős–Kac theorem, Triangular array (currently stubby, but with a fairly good list of examples), List of topics named after Karl Weierstrass, Tangent half-angle substitution, Gerald J. Toomer — I created this one in somewhat stubby form after I noticed that dozens of Wikipedia articles mention this person; before creating it I put links to it into dozens of articles,

Ptolemy's table of chords, Haynsworth inertia additivity formula, Patrick Billingsley, Integral of the secant function, Tikhonov's theorem (dynamical systems), Śleszyński–Pringsheim theorem, Tree of primitive Pythagorean triples, Hermite's cotangent identity, Kummer's theorem, Niven's theorem, Sendov's conjecture, List of things named after Charles Hermite, Loximuthal projection, Mean-periodic function, Tsit Yuen Lam (I translated the German article about him),

Grace–Walsh–Szegő theorem, Cohn-Vossen's inequality, Cyclic sieving (I created this in stubby form, and others expanded it far beyond that). Maryna Viazovska (expanded by others since I created it), Dixon's elliptic functions, Orthopole, List of nonlinear partial differential equations, Glasser's master theorem, Lévy–Steinitz theorem, Convolution quotient, Reducing subspace, Bernoulli quadrisection problem

See if you can spot the difference between this:

:$a+b+c+d\backslash ,$

:$+e+f+g+h\backslash ,$

and this:

:$a+b+c+d\backslash ,$

:$\{\}+e+f+g+h\backslash ,$

Without looking at the TeX code, and guess how and—perhaps more subtly—why the difference was achieved.

:That's subtle! Here is a cruder way of achieving the same effect:

::$+\backslash ,e+f+g+h\backslash ,$

::--RockMagnetist (talk) 04:53, 29 September 2010 (UTC)

:::Actually this latter version by RockMagnetist is incorrect. The correct version, however, doesn't seem to work with our maths module, so I must show it in the commented spoiler below.

• Yea, I got the visual difference quickly but am uncertain what RockMagnetist is perceiving. I was going to put my observation up here and then realized when I saw the spoiler notes, that it would in fact be a spoiler. For those of us non-mathematicians, we certainly take some things for granted... Regards, Steve... Stevenmitchell (talk) 05:24, 8 March 2011 (UTC)

:::– b_jonas 12:23, 7 December 2010 (UTC)

::::Actually I think the version using the curly brackets is better and more logical. However I normally put the dangling sign at the end of the first line and indent the second. Dmcq (talk) 17:37, 10 November 2011 (UTC)

My answer to the question above is this: When "+" is a binary operator, there is a space on each side of it, thus: 3 + 5. But when it is a unary operator, there isn't, thus: +5. In TeX, when you write +5 at the beginning of a line, the software construes it as unary since nothing comes before it (on the same line). But if you want it to be read as binary, you write {} +5, and then there's something (albeit invisible) before it, so it gets rendered as + 5. Michael Hardy (talk) 19:49, 12 May 2012 (UTC)

[http://www.mathpages.com http://www.mathpages.com]

User:Michael Hardy/-ery

User:Michael Hardy/certain stereotypes

User:Michael Hardy/Gauss link invariant

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User:Michael Hardy/Matrix spectral decompositions in statistics

User:Michael Hardy/show-or-hide

User:Michael Hardy/transfer principle

User:Michael Hardy/slope t-test

User:Michael Hardy/Ernst Snapper

User:Michael Hardy/Petry on Euler's zeta function

User:Michael Hardy/Tukey

User talk:Michael Hardy/A remark on epistemic probabilities

[http://techblog.wikimedia.org Techblog]

User:RJGray/Sandbox

User:Michael Hardy/COI and SPAM templates

User:Michael Hardy/Newton

Titchmarsh convolution theorem

User:Michael Hardy/Euler's derivation of the sine series

User:Michael Hardy/The earth rotates

User:Michael Hardy/an integral

User:Michael Hardy/Hadley

User:Michael Hardy/Everest (mathematical competition) (written primarily by User:Luka.W.B.)

User:Michael Hardy/any

User:Michael Hardy/-ling

User:Michael Hardy/Greek.chord.table

User:Michael Hardy/Archaic Greek letters

User:Michael Hardy/Abelian

User:Michael Hardy/named after Bayes

User:Michael Hardy/German prepositions

User:Michael Hardy/proof of André's theorem

User:Michael Hardy/chocolate.Nobel

User:Michael Hardy/Ford Award

User:Michael Hardy/Farnham

User:Michael Hardy/Cyclic function

User:Michael Hardy/Vermont full faith and credit

User:Michael Hardy/Envelope model

List of things named after Andrey Markov

User:Michael Hardy/executive authority

User:Michael Hardy/tangent half-angle derivation

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