The universal covering group of a symmetry group
101090
Why exactly do sometimes universal covers, and sometimes central extensions feature in the application of a symmetry group to quantum physics?
42582
Infinite group with only two conjugacy classes
122665
Help finding the fundamental group of $S^2 \cup \{xyz=0\}$
90081
problems in group theory
109801
multiplicative group of infinite fields
145809
Automorphism group of a lie algebra as a lie subgroup of $GL(\frak g)$
32428
Group homomorphisms and which of the following statements are true (NBHM-$2014$)
123677
Normal subgroups of infinite symmetric group
121257
Image of Homomorphism of Lie groups
151193
Simple subgroup of Symmetric Group
27490
Group Theory in General Relativity
18687
First and second homotopy groups of a connected Lie group
98010
Constructing a metric on a Lie Group
23279
Group Theory Isomorphism
44165
the image of normal subgroups
97637
Showing that isotropy groups are submanifolds
9457
Compact Lie group bi-invariant metric