 Long exact sequence of homotopy groups of a fibration

ID: long-exact-sequence-of-homotopy-groups-of-a-fibration

F \to E \to B

, lifting representatives defines connecting maps and an exact sequence

\dots \to π_{k} (F) \to π_{k} (E) \to π_{k} (B) \partial π_{k - 1} (F) \to \dots .

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