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# and

logical and of the elements of an array

### Calling Sequence

b=and(A), b=and(A,'*') b=and(A,'r'), b=and(A,1) b=and(A,'c'), b=and(A,2)

### Description

`and(A)`

is the logical AND of elements of the
boolean matrix `A`

. `and(A)`

returns
`%T`

("true") if all entries of `A`

are
`%T`

.

`and([])`

returns `%T`

.

`y=and(A,'r')`

(or, equivalently,
`y=and(A,1)`

) is the rowwise and. It returns in each
entry of the row vector `y`

the and of the rows of
`x`

(The and is performed on the row index :
`y(j)= and(A(i,j),i=1,m)`

).

`y=and(A,'c')`

(or, equivalently,
`y=and(A,2)`

) is the columnwise and. It returns in each
entry of the column vector `y`

the and of the columns of
`x`

(The and is performed on the column index:
`y(i)= and(A(i,j),j=1,n)`

)).

### See Also

- not — (~) logical not
- and operator (&) — logical and operator
- or — logical or of the elements of an array

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