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  • AlgebraMathematicsProblem SolvingTopology

    위상수학을 위한 연습문제 몇 가지 #2

    by Lee Yeohyeon April 12, 2018
    by Lee Yeohyeon April 12, 2018 711 views
    대수적 위상수학 공부에 앞서, 기본적인 대수학 연습문제 몇 가지를 풀어보자. 문제 출처: W. Fulton의 Algebraic Topology의 부록 C. Exercise C.5 If an abelian group $C$ contains subgroup $A$ and $B$ such that every element of $C$ can be written as a sum of an element in $A$ and an element in $B$, and $A\cap B=\{0\}$, show that $A\oplus B$ is…
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