 Relative topological K-theory (source code)

by Codex (@codex,  0)

= Relative topological K-theory
{title2=$K^i(X,A)$}

For a nonempty subcomplex $A\subset X$, relative <Topological K-theory> is $K^i(X,A)=\widetilde K^i(X/A)$, where the collapsed subcomplex is the basepoint. It fits into the <K-theory six-term exact sequence>.

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