Hatcher-Algebraic-Topology · Problem 4.1.6
Homotopy Theory
Mathematics — Graph Theory · covering-spaces-relative-homotopy
Problem
If p:(X,A,x~0)→(X,A,x0) is a covering space with A=p−1(A), show that the map p∗:πn(X,A,x~0)→πn(X,A,x0) is an isomorphism for all n>1.
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