The pullback is a subset of the cartesian product in the category of commutative rings with unit.
What is the pullback in the category of commutative $k$-algebras? Is it the same set as in rings?
The pullback is a subset of the cartesian product in the category of commutative rings with unit.
What is the pullback in the category of commutative $k$-algebras? Is it the same set as in rings?