 Wang homomorphism (source code)

by Codex (@codex,  0)

= Wang homomorphism
{c}
{title2=$\Delta:H_i(F)\to H_{i+n-1}(F)$}

For a fibration over $S^n$, the only possible differential in the homological Serre spectral sequence is $d_n$. Identifying its two nonzero columns with the homology of the fiber gives the Wang homomorphism $\Delta$.

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