Example of a monoid with two distinct left inverses
74278
give a counterexample of monoid
17584
Integer matrices with integer inverses
42582
Infinite group with only two conjugacy classes
94203
Examples for almost-semirings without absorbing zero
19683
Is a semigroup $G$ with left identity and right inverses a group?
138273
Terminology for a monoid with a total ordering on the elements?
42835
Example of a relation that is symmetric and transitive, but not reflexive
31392
Examples and Counterexamples of Relations which Satisfy Certain Properties
122151
Proof a $2^n$ by $2^n$ board can be filled using L shaped trominoes and 1 monomino
151009
semigroup in which Green's relations are different
71977
Give an example of a relation R on $A^2$ which is reflexive, symmetric, and not transitive
42213
Computing $\text{Gal}(\mathbb{Q}^{ab}/\mathbb{Q})$
7010
Example of two non-isomorphic fields which embed inside each other
89234
Any Set with Associativity, Left Identity, Left Inverse is a Group
32340
Continuous bijections and their inverses
4383
Finitely generated monoids - how to show that there is not first order set axiomatizing them.
42941
Pair of adjoint functors and showing that two certain maps are inverses