How to define a group structure on a given arbitrary set?
50903
Group tables for a group of four elements.
86263
How do we show there are the same number of elements in each of the sets?
88262
How to enumerate subgroups of each order of $S_4$ by hand
134999
Writing empty set as union of basis elements for a topology.
11015
Given a group $ G $, how many topological/Lie group structures does $ G $ have?
21820
How to prove that a set is invariant?
90584
Show set of affine transformations is a group
141379
All groups where underlying set has at most 4 elements
123065
Pretty way to group elements at odd and even positions
50906
How to write special set notation by hand?
120376
Schema of separation and set of all sets
52473
How do you make a square element symbol (\in), to show that an element belongs to a collection of set?
114968
Partition of a set, definition not clear
151210
How can we find and categorize the subgroups of $\mathbb{R}$?
130706
Group presentations and the Dihedral Group
21938
describing all possible topologies on a set
70034
Showing that this set of functions is a group.