Wikipedia contains articles on a number of mathematical theorems. See also list of theorems.

• Abelian and tauberian theorems
• Abel-Ruffini theorem
• Abel's theorem
• Ankeny-Artin-Chowla theorem
• Arrow's impossibility theorem
• Artin-Wedderburn theorem
• Arzelà-Ascoli theorem
• Atiyah-Singer index theorem
• Baire category theorem
• Banach-Alaoglu theorem
• Banach fixed point theorem
• Barbier's theorem
• Bayes' theorem
• Beatty's theorem
• Bell's theorem
• Berry-Esséen theorem
• Bertrand's postulate (proven by Chebyshev)
• Bézout's theorem
• Binomial theorem
• Bolyai-Gerwien theorem
• Bolzano-Weierstrass theorem
• Boolean prime ideal theorem
• Borsuk-Ulam Theorem
• Brouwer fixed-point theorem
• Bruck-Chowla-Ryser theorem
• Buckingham Pi theorem
• Cantor's theorem
• Cantor-Bernstein-Schroeder theorem
• Cauchy integral theorem
• Cayley-Hamilton theorem
• Cayley's Theorem
• Central limit theorem
• Ceva's Theorem
• Chebotarev's density theorem
• Chebyshev's inequality
• Chebyshev's sum inequality
• Chinese remainder theorem
• Chowla-Mordell theorem
• Church-Rosser theorem
• Closed graph theorem
• Compactness theorem
• Convolution theorem
• Cox's theorem
• Dandelin's theorem — see Dandelin spheres.
• De Finetti's theorem
• Desargues' theorem
• Descartes' theorem
  • See defect (geometry) for another theorem of Descartes.
• Dirichlet's theorem
• Dirichlet's unit theorem
• Divergence theorem
• Dominated convergence theorem
• Earnshaw's theorem
• Erdös-Ko-Rado theorem
• Euler's theorem
• Existence theorem
• Fermat's last theorem
• Fermat's little theorem
• Fermat's theorem
• Fluctuation theorem
• Four color theorem
• Fourier inversion theorem
• Fubini's theorem
• Gauss-Bonnet theorem
• Gauss-Markov theorem
• Gauss-Wantzel theorem
• Gelfand-Naimark theorem
• Gibbard-Satterthwaite theorem
• Girsanov's theorem
• Gödel's completeness theorem
• Gödel's incompleteness theorem
• Gödel's second incompleteness theorem
• Goodstein's theorem
• Green's theorem
• Grothendieck-Riemann-Roch theorem
• Hahn-Banach theorem
• Hairy ball theorem
• Hausdorff maximality theorem
• Heine-Borel theorem
• Hellinger-Toeplitz theorem
• Hilbert's basis theorem
• Infinite monkey theorem
• Intermediate value theorem
• Inverse function theorem
• Isomorphism theorem
• Jacobson density theorem
• Jordan curve theorem
• Kirszbraun theorem
• Kleene's recursion theorem
• Knaster-Tarski theorem
• Kolmogorov-Arnold-Moser theorem
• König's theorem
• Krull's principal ideal theorem
• Lagrange's four-square theorem
• Lagrange inversion theorem
• Lagrange's theorem
• Lasker-Noether theorem
• Laurent expansion theorem
• Lehmann-Scheffé theorem
• Lindemann-Weierstrass theorem
• Linear congruence theorem
• Linnik's theorem
• Liouville's theorem
• Löwenheim-Skolem theorem
• Lyapunov's central limit theorem
• Mahler's theorem
• Marriage theorem
• Matiyasevich's theorem
• Max flow min cut theorem
• Maximum power theorem
• Maxwell's theorem
• Mean value theorem
• Mercer's theorem
• Mertens' theorems
• Metrization theorems
• Minimax theorem
• Minkowski's theorem
• Mitchell's embedding theorem
• Mohr-Mascheroni theorem
• Monotone convergence theorem
• Morera's theorem
• Myhill-Nerode theorem
• Nash embedding theorem
• No-cloning theorem
• Noether's theorem
• Nyqvist-Shannon sampling theorem
• Open mapping theorem
• Pentagonal number theorem
• Peter-Weyl theorem
• Pick's theorem (plane geometry)
• Pick's theorem - PID controller
• Pitman-Koopman-Darmois theorem
• Plancherel theorem
• Poncelet-Steiner theorem
• Prime number theorem
• Pythagorean theorem
• Radon-Nikodym theorem
• Ramsey's theorem
• Rank-nullity theorem
• Rao-Blackwell theorem
• Rational root theorem
• Residue theorem
• Rice's theorem
• Riemann mapping theorem
• Riemann-Roch theorem
• Riesz representation theorem
• Robertson-Seymour theorem
• Rolle's theorem
• Sarkovskii's theorem
• Seifert-van Kampen theorem
• Simple theorems in the algebra of sets
• Simplicial approximation theorem
• Skolem-Noether theorem
• Soundness theorem
• Spectral theorem
• Sprague-Grundy theorem
• Squeeze theorem
• Stark-Heegner theorem
• Stokes' theorem
• Stone's representation theorem for Boolean algebras
• Stone-Weierstrass theorem
• Swan's theorem
• Sylow theorem
• Szeméredi's theorem
• Taniyama-Shimura theorem
• Taylor's theorem
• Thales' theorem
• Theorem of Bolzano-Weierstrass
• Theorem of Heine-Borel
• Theorem of Lagrange
• Theorema Egregium
• Tietze extension theorem
• Time hierarchy theorem
• Turán's theorem
• Tychonoff's theorem
• Uniformization theorem
• Van der Waerden's theorem
• Virial theorem
• Von Neumann bicommutant theorem
• Weierstrass approximation theorem
• Weierstrass-Casorati theorem
• Weierstrass preparation theorem
• Well-ordering theorem
• Whitney embedding theorem
• Wilson's theorem