Not And

Computes the logical NAND of the inputs. Both inputs must be Booleans or numerics. If both inputs are TRUE, the function returns FALSE. Otherwise, it returns TRUE.

Note  This function performs bit-wise operations on numeric inputs.

The connector pane displays the default data types for this polymorphic function.

x must be a Boolean value, or a number. It can be a scalar, array or cluster of numbers or Boolean values, array of clusters of numbers or Boolean values, and so on.
y must be a Boolean value, or a number. It can be a scalar, array or cluster of numbers or Boolean values, arrays of clusters of numbers or Boolean values, and so on.
.not. (x .and. y)? is the logical NAND of x and y.