User:AxelBoldt

I teach mathematics at Metropolitan State University in Saint Paul, Minnesota. I'm interested in molecular biology, theoretical computer science, physics, astronomy, free software, (political) philosophy and chess. My home page is at http://math-www.uni-paderborn.de/~axel/.

I have contributed to and taken an active interest in the following Wikipedia articles. Since I don't believe that "intellectual property rights" exist, every word I write is by default, and always, in the public domain.

Mathematics

Abelian group -- Adjacency matrix -- Adjoint functors -- Adjugate -- Algebraic geometry -- Algebraic structure -- Algebraically compact module -- Antiderivative -- Archimedian spiral -- Associative algebra -- Baire category theorem -- Banach space -- Banach-Tarski paradox -- Beatty's theorem -- Bernoulli inequality -- Binomial coefficient -- Binomial theorem -- Bolyai-Gerwien theorem -- Boolean algebra -- Boolean ring -- Borel algebra -- Braid group -- Cartesian closed category -- Catalan number -- Catalan's constant -- Category of abelian groups -- Category of sets -- Category of topological spaces -- Category theory -- Cauchy integral theorem -- Cauchy-Binet formula -- Cauchy's integral formula -- Central limit theorem -- Characteristic polynomial -- Chinese remainder theorem -- Closed set -- Closure operator -- Coalgebra -- Collatz conjecture -- Complex number -- Concrete category -- Conjugacy class -- Conjugate transpose -- Continued fraction -- Continuous Fourier transform -- Convergence of random variables -- Counting measure -- Covering map -- Cubic equation -- De Moivre's formula -- Derived functor -- Determinant -- Direct sum -- Directed set -- Dirichlet character -- Discrete Fourier transform -- Discrete logarithm -- Discriminant of a polynomial -- Distribution -- Division algebra -- Division ring -- Dual space -- Ehrhart polynomial -- Ellipsoid -- Elliptic curve -- Elliptic function -- Endomorphism ring -- Entire function -- Euler's formula -- Euler's four-square identity -- Euler's identity -- Euler's theorem -- Euler-Maclaurin formula -- Even and odd permutations -- Exact functor -- Expected value -- Exponential function -- Extended Riemann hypothesis -- Extended real number line -- F-space -- Fast Fourier Transform -- Finite field -- Finitely generated abelian group -- Fitting lemma -- Floor function -- Formal power series -- Four color theorem -- Fraction (mathematics) -- Fréchet space -- Free group -- Functor category -- Fundamental Theorem of Calculus -- Galois connection -- Gauss-Bonnet theorem -- Gauss-Jordan elimination -- Generalized mean -- Generalized Riemann hypothesis -- Geometric progression -- Greatest common divisor -- Grothendieck topology -- Group action -- Group homomorphism -- Haar measure -- Hahn-Banach theorem -- Harmonic function -- Harmonic mean -- Harmonic series (mathematics) -- Hausdorff dimension -- Hilbert's basis theorem -- Hilbert's Nullstellensatz -- Hölder's inequality -- Hilbert's third problem -- Holomorphic function -- Homology (mathematics) -- Homotopy -- Hopf algebra -- Horner scheme -- Hyperbolic function -- Imaginary number -- Incircle and excircles of a triangle -- Indecomposable module -- Independent (probability) -- Initial object -- Injective module -- Inner automorphism -- Integral domain -- Invariance of domain -- Invertible matrix -- Isomorphism of categories -- Jacobson radical -- Kleene algebra -- Kleene's recursion theorem -- König's lemma -- L'Hopital's rule -- Lagrange inversion theorem -- Lambert's W function -- Landau's function -- Laplace's equation -- Lebesgue measure -- Length of a module -- Lie algebra -- Lie group -- Limit (category theory) -- Limit (mathematics) -- Linear congruence theorem -- Linear transformation -- Liouville's theorem -- Lipschitz continuous -- List of mathematical topics -- List of small groups -- Locally compact -- Locally ringed space -- Log-normal distribution -- Logarithmic spiral -- Maximum entropy probability distribution -- Mathematical class -- Mathematics -- Matroid -- Matrix (mathematics) -- Matrix norm -- Max flow min cut theorem -- Measure of non-compactness -- Miller-Rabin primality test -- Minkowski inequality -- Minkowski's theorem -- Minor (graph theory) -- Mitchell's embedding theorem -- Modular arithmetic -- Monster group -- Monty Hall problem -- Nash embedding theorem -- Net -- Newton's method -- Nine lemma -- Normal distribution -- Normal matrix -- Normal number -- Normal space -- Nowhere dense -- Number theory -- Open map -- Open mapping theorem -- Open set -- Order (group theory) -- Order of operations -- Paracompact -- Path integral -- Permanent -- Pi -- Pointless topology -- Pole (complex analysis) -- Polygon -- Polynomial -- Positive definite -- Power series -- Prime ideal -- Prime number theorem -- Primitive root modulo n -- Probability density function -- Probability space -- Product (category theory) -- Product of rings -- Proportional -- Pure submodule -- Quotient space -- Rank of a matrix -- Rectifiable curve -- Reflexive space -- Regression toward the mean -- Residue (complex analysis) -- Residue theorem -- Riemannian manifold -- Riemann hypothesis -- Riemann mapping theorem -- Riemann zeta function -- Riesz representation theorem -- Ring homomorphism -- Ring ideal -- Root of unity -- Sarkovskii's theorem -- Semi-continuous -- Semidirect product -- Shapley value -- Simple group -- Simple module -- Simply connected -- Singleton -- Slope -- Spectrum of a ring -- Stone-Weierstrass theorem -- Substitution rule -- Suslin's problem -- Symmedian -- Symmetry -- Tangent -- Tangent space -- Tarski's circle squaring problem -- Taylor series -- Taylor's theorem -- Tensor -- Theorem of Bolzano-Weierstrass -- Theorem of Heine-Borel -- Tietze extension theorem -- Topological group -- Topological ring -- Topos -- Trace of a matrix -- Triangle -- Tychonoff's theorem -- Uniform convergence -- Uniform space -- Uniformly continuous -- Unique factorization domain -- Universal property -- Urysohn's Lemma -- Vector -- Vector bundle -- Von Neumann regular ring -- Weierstrass-Casorati theorem -- Whitehead problem -- Yoneda lemma -- Zero divisor -- Zero morphism --

Logic and Computability

Ackermann function -- Algorithmic information theory -- Chaitin's constant -- Computable number -- Continuum hypothesis -- Definable number -- Entscheidungsproblem -- Epimenides paradox -- First-order predicate calculus -- Gödel's incompleteness theorem -- Gödel's ontological proof -- Lambda calculus -- Liar paradox -- Matiyasevich's theorem -- Ordinal -- Presburger arithmetic -- Principia Mathematica -- Word problem for groups

Computing

A.L.I.C.E. -- Analytical engine -- Birthday attack -- Blender (program) -- CVS -- Colossus computer -- CoolWebSearch -- Complexity classes P and NP -- Computer algebra system -- Context-free grammar -- Copyleft -- Difference engine -- Exponentiating by squaring -- GIMPS -- GNU Free Documentation License -- Gnuplot -- History of computing -- ImageMagick -- Literate programming -- MathML -- Mebibyte -- Mizar system -- Multiplication algorithm -- QED project -- Pumping lemma -- Regular language -- Simputer -- Standards Performance Evaluation Corporation -- SWIG -- Timeline of computing 1950-1979 -- Timeline of computing 1980-1989 -- Timeline of computing 1990-forward -- Timeline of computing 750 BC-1949 -- Timeline of computing -- Time hierarchy theorem -- Turing Test -- Unary -- Windows Meta File -- X video extension -- Z notation

Physics and Astronomy

Atomic mass unit -- Big Bang -- Color -- Dimensional analysis -- Grandfather paradox -- Gyrocompass -- Higgs boson -- Hubble space telescope -- Hubble's law -- Virgo Supercluster -- Physics -- Potential difference -- Prism -- Quantum mechanics -- Redshift -- Refractive index -- Schroedinger equation -- Statcoulomb -- Theory of relativity -- Uncertainty Principle -- Wave-Particle duality

Biology

Acetaminophen -- Alcohol dehydrogenase -- Atherosclerosis -- Bacteria in the human body -- Bartholin's gland -- Bottlenose Dolphin -- Beta blocker -- Beauveria bassiana -- Blue field entoptic phenomenon -- Camellia sinensis -- Circulatory system -- Color constancy -- Common cold -- Dendritic cell -- Discrimination abilities of pigeons -- EC number -- ELISA -- Fitbone surgery -- Gray whale -- Helicobacter pylori -- HIV test -- Homologous -- Housefly -- Hyperventilation -- Isotretinoin -- Human skin color -- Ketone bodies -- Knockout mouse -- Low birth weight paradox -- Malaria -- Menstrual cycle -- Mus musculus -- Myostatin -- Naloxone -- Ontogeny and phylogeny -- Para rubber tree -- Peptide bond -- Phycobilin -- Plastination -- Postpartum depression -- Protein Data Bank -- Pseudomembranous colitis -- Rapid eye movement -- Recapitulation theory -- Red blood cell -- Septum -- Timeline of evolution -- Terms for anatomical location -- Toxoplasma gondii -- TRIM5-alpha -- Visible Human Project

Chemistry

Acetaldehyde -- Carbon dioxide -- CAS registry number -- Citric acid -- Ethanol -- Lactic acid -- Mustard oil -- Nitric oxide -- Nitrous oxide -- Polymethyl methacrylate -- Salt -- Sodium hypochlorite -- UN number -- Wood gas -- Zyklon B

People

Amir Ageeb -- Mohammed Farah Aidid -- Alexander Alekhine -- Joan of Arc -- Mohammad Atta -- Aung_San_Suu_Kyi -- Roger Bacon -- Astrid Benöhr -- Otto von Bismarck -- Napoleon Bonaparte -- Hieronymus Bosch -- Caligula -- Gerolamo Cardano -- John Craig -- Carl Friedrich Gauss -- Billy Graham -- Martin Guerre -- Gunther von Hagens -- Werner Karl Heisenberg -- Harry Houdini -- Jörg Immendorff -- Theodore Kaczynski -- Chuwit Kamolvisit -- Charles H. Keating Jr. -- Robert Kelly -- Maximillian Kolbe -- Hugh Loebner -- Johann Nepomuk Mälzel -- Ulrike Meinhof -- Michel de Montaigne -- Adolphe Quetelet -- Pornthip Rojanasunand -- Rainer Rupp -- Peter III of Russia -- Marquis de Sade -- Peter Singer -- Gertrude Stein -- Jesse Ventura -- Eduard Verhagen -- Leonardo da Vinci -- Nina de Vries -- Otto Weininger -- Stephen Wolfram -- Rob Zicari

Miscellaneous

Amway -- Atlantis (brothel) -- Auschwitz -- Auschwitz concentration camp -- Body Worlds -- Bandwagon effect -- Causality -- Cavalese cable-car disaster -- Chess strategy and tactics -- Chess -- Chicken Ranch -- Child pornography -- Cipla -- Climate changes of 535-536 -- Cognitive science of mathematics -- De Wallen -- Fontevraud Abbey -- Hoffmann-La Roche -- Holocaust -- How to find a book (http://wikibooks.org/wiki/Transwiki:How_to_find_a_book)   (http://wikibooks.org/wiki/Talk:Transwiki:How_to_find_a_book)-- Humanae Vitae -- Kathoey -- Kern county child abuse cases -- Landmine -- Lengede -- Matrix -- Memorial to the Murdered Jews of Europe -- Metropolitan State University -- Mustang Ranch -- Nigerian money transfer fraud -- OBJECTIVE: Christian Ministries -- Ohio v. Dalton -- Operation Coffee Cup -- Philosophy of mathematics -- Polygraph -- Pornography -- Potsdam Conference -- Prosecutor's fallacy -- Prostitution -- Prostitution in Germany -- Prostitution in Nevada -- Royal Library, Copenhagen -- Quixtar -- Red eye effect -- Santorum Amendment -- Shell game -- Siddhartha -- Slogan 'AIDS Kills Fags Dead' -- Spiral Island -- Tenrikyo -- The 120 Days of Sodom -- The Kreutzer Sonata -- Thumbnail gallery post -- Tiger Temple -- Vatican Library -- Weed music distribution service -- Whistled speech -- WordNet

Wikipedia

I award you this barnstar for the consistently excellent quality of your thousands of contributions, for your many articles on mathematics and a whole range of other topics, and for being in all respects one of Wikipedia's finest contributors. — Trilobite

Making fun of Britannica -- Wikipedia:How to edit a page -- Wikipedia:Searching -- Wikipedia:WikiMoney

Some convenience links for my own use:

• To Do list.
• List of mathematical topics
• Last 500 new articles (http://www.wikipedia.org/w/wiki.phtml?title=Special:Newpages&limit=500)
• Edit list of math topics (A-C) (http://www.wikipedia.org/w/wiki.phtml?title=List_of_mathematical_topics&action=edit&redirect=no)
• Edit list of math topics (D-F) (http://www.wikipedia.org/w/wiki.phtml?title=List_of_mathematical_topics_(D-F)&action=edit&redirect=no)
• Edit list of math topics (G-I) (http://www.wikipedia.org/w/wiki.phtml?title=List_of_mathematical_topics_(G-I)&action=edit&redirect=no)
• Edit list of math topics (J-L) (http://www.wikipedia.org/w/wiki.phtml?title=List_of_mathematical_topics_(J-L)&action=edit&redirect=no)
• Edit list of math topics (M-O) (http://www.wikipedia.org/w/wiki.phtml?title=List_of_mathematical_topics_(M-O)&action=edit&redirect=no)
• Edit list of math topics (P-R) (http://www.wikipedia.org/w/wiki.phtml?title=List_of_mathematical_topics_(P-R)&action=edit&redirect=no)
• Edit list of math topics (S-U) (http://www.wikipedia.org/w/wiki.phtml?title=List_of_mathematical_topics_(S-U)&action=edit&redirect=no)
• Edit list of math topics (V-Z) (http://www.wikipedia.org/w/wiki.phtml?title=List_of_mathematical_topics_(V-Z)&action=edit&redirect=no)

Axel Boldt

Template:Userpage