Question

For any two non -empty sets A and B,A×B is called as​

Answer 1

Answer:

A concrete category, when defined without reference to the notion of a category, consists of a class of objects, each equipped with an underlying set; and for any two objects A and B a set of functions, called morphisms, from the underlying set of A to the underlying set of B.

hope this have helped u a lot

please follow me and Mark me as the brainliest