New posts in Morphism

Pullback in the category of graphs

Can two morphisms with equal mappings be distinct in category theory?

The monoid of fractions associated with the submonoid of cancellable elements of a commutative monoid E

Why don't we take clopen maps as morphisms of the category of topological spaces?

What is a homomorphism and what does "structure preserving" mean?

Why do we study the number of homomorphisms/isomorphisms between fields?

The role of maps in algebraic structures?