And
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∧

And (∧
) is a dyadic scalar boolean function which tests if both arguments are true: it returns 1 if both are 1 and 0 if one or both are 0. It represents the logical conjunction in Boolean logic. In many APLs, And is a special case of the LCM function.
∧ 
0 
1


0

0 
0

1

0 
1

Examples
The following shows all possible combinations of inputs as a Boolean function.
0 0 1 1 ∧ 0 1 0 1
0 0 0 1
When combined with Reduce, And can be used to test if every value in a Boolean vector is true.
∧/ 1 1 1 1 1
1
∧/ 1 0 0 1 1
0