coalgebra
A coalgebra is a vector space over a field with a -linear map ,
called the comultiplication,
and a (non-zero) -linear map ,
called the counit, such that
In of commutative diagrams:
A coalgebra is a vector space over a field with a -linear map ,
called the comultiplication,
and a (non-zero) -linear map ,
called the counit, such that
In of commutative diagrams: