Let $A$ and $B$ be sets. What is this type of product called: $AB = \{ xy \;:\; x \in A,\; y \in B \}$?
I found this notation at https://en.wikipedia.org/wiki/Infimum_and_supremum in Section 4.1.
Let $A$ and $B$ be sets. What is this type of product called: $AB = \{ xy \;:\; x \in A,\; y \in B \}$?
I found this notation at https://en.wikipedia.org/wiki/Infimum_and_supremum in Section 4.1.