Topological groups vs regular groups
93147
Topological groups, why need them?
30793
Intuition behind normal subgroups
152679
Homogeneous topological spaces
111375
Normality of subgroups and Sylow groups under homomorphisms...
52548
Topological group: Multiplying two loops is homotopic to linking these paths?
34966
Is the product of closed subgroups in topological group closed?
151354
Why are there no non-trivial regular maps $\mathbb{P}^n \to \mathbb{P}^m$ when $n > m$?
132704
If G is not commutative, then is there always a subgroup that is not a normal subgroup?
58484
Is the topological product $\Pi \{G_\alpha: \alpha < \kappa\} $ a topological group?
59289
Nested Sequence of Topological Space and the Coherent Topology; Munkres Topology 35.9
55064
Homology groups of torus
91021
Torsion elements of a group aren't necessarily a subgroup
125244
Equivalent definitions of normal subgroups
80381
Groups with "few" subgroups
145220
Homology Groups of $S^n$
78580
Is $SL_n(\mathbb{R})$ a normal subgroup in $GL_n(\mathbb{R})$?
25421
Simple or not simple Groups