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Induced homomorphism (algebraic topology) : ウィキペディア英語版 | Induced homomorphism (algebraic topology) In mathematics, especially in the area of topology known as algebraic topology, an induced homomorphism is a way of relating the algebraic invariants of topological spaces which are already related by a continuous function. Such homomorphisms exist whenever the algebraic invariants are functorial. For example, they exist for fundamental groups, higher homotopy groups, singular homology, and De Rham cohomology. For the more categorical approach, see induced homomorphism, and for the specific case of fundamental groups, see induced homomorphism (fundamental group). ==Definitions== A continuous function between topological spaces (possibly with some additional structure) induces homomorphisms between various algebraic structures associated with and , respectively.
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