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New posts in category-theory

Categorical structure in Haskell

haskell category-theory

Do the functor laws prove complete preservation of structure?

Are all fixed size containers strong monoidal functors, and/or vice versa?

What exactly is a category?

Initial algebra for rose trees

It's not a monad, but what is it?

Composition of two functors is a functor

Generalization of strong and closed profunctors

How to define equality for Category instances?

haskell category-theory

Every monad is monoid?

haskell category-theory

Why isn't there a simple syntax for coproduct types in Haskell?

What would be the methods of a bi-comonad?

Defining Categories and Category Laws in Haskell

Does each type have a unique catamorphism?

Why must fmap map every element of a List?

What's the relation of fold on Option, Either etc and fold on Traversable?

Functor instance for generic polymorphic ADTs in Haskell?

What is the relationship between bind and join?