👉 Daggerlike is a concept in mathematics, specifically in category theory and algebraic geometry. It was introduced by G. L. Birkhoff in his 1946 paper "The Algebraic Theory of Categories" (Proc. London Math. Soc., vol. 25, pp. 387-404). The term is often used to refer to a category that has an underlying structure similar to the concept of a dagger (a binary operation in set theory
