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bn:03099791n
Noun Named Entity
Categories: Homotopy theory, Articles with short description, Category theory, Theorems in algebraic topology, Higher category theory
EN
Seifert–van Kampen theorem  Van Kampen's Theorem  Seifert-van Kampen theorem  Seifert-van Kampfen theorem  Seifert - van Kampen theorem
EN
In mathematics, the Seifert–van Kampen theorem of algebraic topology, sometimes just called van Kampen's theorem, expresses the structure of the fundamental group of a topological space X {\displaystyle X} in terms of the fundamental groups of two open, path-connected subspaces that cover X {\displaystyle X}. Wikipedia
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EN
In mathematics, the Seifert–van Kampen theorem of algebraic topology, sometimes just called van Kampen's theorem, expresses the structure of the fundamental group of a topological space X {\displaystyle X} in terms of the fundamental groups of two open, path-connected subspaces that cover X {\displaystyle X}. Wikipedia
A theorem in topology describing the fundamental group of a space in terms of a cover of the space by two open path-connected subspaces Wikidata
IS A
theorem
NAMED AFTER
Herbert Seifert
Egbert van Kampen
STUDIED BY
category theory
Wikipedia
EN
Seifert–van Kampen theorem
Wikidata
EN
Seifert–van Kampen theorem
Wikipedia Redirections
EN
Seifert-van Kampen theorem, Seifert-van Kampfen theorem, Seifert - van Kampen theorem, Seifert – van Kampen theorem, Seifert–van Kampen theorem, surface group, SVK theorem, Van Kampen's theorem, Van Kampen's Theorem, Van Kampen theorem
Wikidata Alias
EN
Seifert-van Kampen theorem, van Kampen theorem

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