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代数的位相幾何学
Wikipedia definition
1. Algebraic topologyAlgebraic topology is a branch of mathematics which uses tools from abstract algebra to study topological spaces. The basic goal is to find algebraic invariants that classify topological spaces up to homeomorphism, though usually most classify up to homotopy equivalence. Although algebraic topology primarily uses algebra to study topological problems, using topology to solve algebraic problems is sometimes also possible.
Read “Algebraic topology” on English Wikipedia
Read “代数的位相幾何学” on Japanese Wikipedia
Read “Algebraic topology” on DBpedia

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