Home›Topology›All TopologyBrowse ByAll TopologyReference and ClassificationDevelopingProved results about the properties a space keeps under continuous deformation. Belongs here: topological theorems. Does not belong here: results still conjectural, and results that turn on exact distance or curvature rather than continuous deformation, which belong under Geometry instead.FactsAll TopologySourcesComments (0)Reader Challenges (0)FactsComparisonEra Of EmergenceWell-attested1895 1All TopologyFilter Results48 entriesBranchAllAlgebraic Topology (10)Differential Topology (6)Dynamical Systems (1)Functional Analysis (1)Geometric Topology (1)Geometry (2)Knot Theory (1)Topology (27)Topic AreaAllAlgebraic Topology (16)Fixed-Point Theorems (4)General Topology (5)Geometric and Differential Topology (18)Map Coloring and Topological Graph Theory (1)ProvedAll1885 (1)1886 (1)1887 (1)1895 (1)1906 (1)1907 (1)1911 (1)1912 (1)1915 (1)1923 (1)1925 (1)1926 (1)1927 (1)1930 (1)1931 (1)1933 (2)1934 (1)1935 (1)1937 (1)1941 (1)1942 (1)1949 (1)1951 (1)1953 (1)1958 (1)1961 (1)1962 (1)1963 (1)1965 (1)1969 (1)1976 (1)1982 (1)1983 (1)1985 (1)2003 (2)Proved ByAllCamille Jordan (1)Edgar H. Brown (1)Georg Cantor (1)Grigori Perelman (2)Hans Freudenthal (1)Hassler Whitney (2)Heinrich Tietze (1)Henri Poincaré (4)Herbert Seifert (1)J. H. C. Whitehead (1)Juliusz Schauder (1)Jun-iti Nagata (1)Karol Borsuk (1)Kenneth Appel (1)L. E. J. Brouwer (3)Leopold Vietoris (1)Michael Atiyah (1)Michael Freedman (1)Mikhail Gromov (1)Nicolaas Kuiper (1)Pavel Urysohn (2)Roger Lyndon (1)Samuel Eilenberg (1)Shizuo Kakutani (1)Simon Donaldson (1)Solomon Lefschetz (1)Stephen Smale (2)Wolfgang Haken (1)Named AfterAllGeorg Cantor (1)Statement FormAllCharacterization (19)Classification Theorem (4)Equation (8)Existence Theorem (11)Identity (8)Impossibility Theorem (1)Inequality (9)Show ResultsBrowseCompareSelect all 48Alexander DualityTopologyAlexander's Theorem, Braid ClosureTopologyAtiyah-Singer Index TheoremTopologyBorsuk-Ulam TheoremTopologyBrouwer Fixed-Point TheoremTopologyBrown Representability TheoremTopologyCantor's Intersection TheoremTopologyClassification of SurfacesTopologyCurtis-Hedlund-Lyndon TheoremTopologyDe Rham's TheoremTopologyDonaldson's TheoremTopologyEilenberg-Zilber TheoremTopologyFour Color TheoremTopologyFreedman's TheoremTopologyFreudenthal Suspension TheoremTopologyGromov's Non-Squeezing TheoremTopologyHairy Ball TheoremTopologyH-Cobordism TheoremTopologyHurewicz TheoremTopologyInvariance of DomainTopologyJordan Curve TheoremTopologyKakutani Fixed-Point TheoremTopologyKuiper's TheoremTopologyKunneth TheoremTopologyLefschetz Fixed-Point TheoremTopologyLeray-Hirsch TheoremTopologyLeray-Schauder Fixed-Point TheoremTopologyMayer-Vietoris TheoremTopologyNagata-Smirnov Metrization TheoremTopologyPoincare ConjectureTopologyPoincare Duality TheoremTopologyPoincare LemmaTopologyPoincare-Hopf TheoremTopologyReidemeister's TheoremTopologySard's TheoremTopologySchoenflies TheoremTopologySmale's Theorem (Sphere Eversion)TopologyThurston's Geometrization TheoremTopologyTietze Extension TheoremTopologyTychonoff's TheoremTopologyUniformization TheoremTopologyUniversal Coefficient TheoremTopologyUrysohn Metrization TheoremTopologyUrysohn's LemmaTopologyVan Kampen's TheoremTopologyWhitehead TheoremTopologyWhitney Embedding TheoremTopologyWhitney Immersion TheoremTopologySources1. Wikipedia: Topologytier 2Wikimedia FoundationHistory sectionQuote, History sectionIn 1895, he published his ground-breaking paper on Analysis Situs, which introduced the concepts now known as homotopy and homology, which are now considered part of algebraic topology.View the SourceComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.