List questions from cw-complexes | MathQA

Prove that $\langle a,b\mid ab=ba^n\rangle$ is not isomorphic to $\langle a,b\mid ab=ba^{n'}\rangle$ when $n\neq n'$

Published on 12 Apr 2026 - 21:23

For a cw-complex the pair $\left(X,X^n \right)$ is n-connected

Published on 17 Apr 2026 - 5:40

proving that the inclusions $i:X \to CX$, $j:Y \to C_f$, $j':Y \to M_f$ have the homotopy extension property

Published on 11 Apr 2026 - 16:20

Can we glue CW complexes to themselves?

Published on 12 Apr 2026 - 12:51

CW complex for Möbius strip and its homeomorfisams

Published on 11 May 2026 - 2:53

Suspension and reduced suspension

Published on 10 Apr 2026 - 23:27

Topology on a graph as a CW-complex

Published on 15 Apr 2026 - 1:03

Why are groups of type $F_2$ finitely presented?

Published on 14 Apr 2026 - 12:33

What is an example of a closed manifold whose universal cover is not of finite homotopy type?

Published on 11 Apr 2026 - 14:21

$A\hookrightarrow X$ induces an injection $H_n(A)\hookrightarrow H_n(X)$

Published on 12 Apr 2026 - 16:35