Let $f:A\rightarrow B, g:B\rightarrow C$ be maps in the category CGWH (compactly generated weakly Hausdorff spaces). Do we have a homotopy fibration sequence $$F(f)\rightarrow F(gf) \rightarrow F(g)$$ consisting of homotopy fibres? (And the dual statement for homotopy cofibres?)
Homotopy fibre of composition
Lao-tzu
- 1.9k
- 13
- 16