New posts in algebraic-topology

Is the homotopy type of an aspherical space determined by its fundamental group?

Is the canonical $(n-1)$-plane bundle over the deleted total space of an orientable $n$-plane bundle orientable?

Covering spaces of $S^1 \vee S^1$.

$S^n$ is not homotopy equivalent to any subspace $\mathbb{R}^n$ [duplicate]

Research level algebraic topology

Finding the fundamental group of the complement of a certain graph

Does smashing always increase the connectivity of a space?

What is the gender of $K(\pi,n)$ in French?

Closed $n$ cell and Hausdorff property proof

Transition functions for the tautological bundle

Atiyah K-theory

The fundamental group of a compact, locally simply connected space is finitely generated

Identifying a $\Delta$ complex

Covering space is a fiber bundle

Geometric reason as to why $H^2$ of the Klein bottle is $\mathbb{Z}/2\mathbb{Z}$?

Abelianization of free product is the direct sum of abelianizations [duplicate]

When van Kampen Fails

Can the fundamental group and homology of the line with two origins be computed as a direct limit?

Visualising regular CW complex

Is there a “spanning simplex” method to calculate homology of low dimensional simplicial complexes?