Gourmet 发表于 2025-3-28 17:10:28
http://reply.papertrans.cn/39/3890/388930/388930_41.pngNICE 发表于 2025-3-28 20:57:08
Adjunctions and Monads an action of .(.), a set in which every formal linear combination has been given a value. Of course, a monad can be defined over every category, not just Set. The Beck criterion characterizes those categories which are categories of algebras for a monad.