Commit 2025-06-02 10:27 9c388d14
View on Github →feat(CommAlgCat): the category of commutative algebras (#23601)
Define the category of commutative R-algebras. This is the same as Under R up to two details:
A : CommAlg Rcontains the data of bothalgebraMap R A : R → AandAlgebra.smul : R → A → A.A : Under Ronly containsalgebraMap R A, meaning that going back and forth betweenUnder Rand unbundled algebras is painful/nigh impossible.- If
A : Under R, thenAmust live in the same universe asRFrom Toric, FLT Closes #19299