And

e1 && e2 && ... is the logical AND function. It gives False immediately if any argument is False, and True if all are True.

Examples

Logical AND:

True && True
(* True *)

True && False
(* False *)

With conditions:

x = 5;
x > 0 && x < 10
(* True *)

Please visit the official Wolfram Language Reference for more details.