Group structure on arbitrary topological spaces
139827
On which topological spaces, can we give a group structure to make it a topological group?
148112
Prove that a topological space equipped with a delta-complex structure is Hausdorff
105996
Topology of matrices
35961
In what sense of "structure" do group homomorphisms "preserve structure"?
155421
Tensor product of monoids and arbitrary algebraic structures
135256
The fiber of a covering space over a connected space has constant cardinality
126930
Finding all group homomorphisms of $S_n\to\mathbb{C}^*$ and $A_n\to\mathbb{C}^*$
121636
General linear group of a vector space
100437
Classification of connected subsets of the real line (up to homeomorphism)
32428
Group homomorphisms and which of the following statements are true (NBHM-$2014$)
115502
Analogue of the Cantor-Bernstein-Schroeder theorem for general algebraic structures
141642
Closure of a certain subset in a compact topological group
103717
Topological Property of the Set of Integers
74383
How many group structures make $S^1$ a topological group?
99382
What is needed to make Euclidean spaces isomorphic as groups?
136108
Arbitrary intersection of closed, connected subsets of a compact space connected?
150796
Subspace topology and order topology (2)