How can a monoid be a category with just one object?
58190
Definition of a monoid: clarification needed
136210
There is more than one functor that fix objects in category of groups?
96047
Why are two universal objects isomorphic?
6904
questions about extremal epimorphisms in category theory
58028
Semisimplicity is equivalent to each simple left module is projective?
83744
is there a property of a category that is preserved by category isomorphism, but not equivalence?
78609
On the identity map requirement in the definition of category
85379
Semigroup analogue to the classification of finite simple groups?
17224
Write ‘There is exactly 1 person…’ without the uniqueness quantifier
100245
Category of Grp is not a subcategory of Set
55475
Why MonadPlus and not Monad + Monoid?
152354
Why is an empty set not a terminal object in categories $\mathsf{Top}$ and $\mathsf{Sets}$?
10679
Equivalence of Categories and of Their Functor Categories
58967
Is There a Difference Between Taxonomies and Categories?
96017
In a preadditive category, products are coproducts
80260
Can it happen that the image of a functor is not a category?
132371
Confused about the definition of a group as a groupoid with one object.