NB: More recent documentation for Dyalog APL is available at https://docs.dyalog.com/20.0/.
Monadic Logical AND is not defined.
Dyadic Logical AND means
0 1 0 1 ∧ 0 0 1 1
0 0 0 1
15 1 2 7 ∧ 35 1 4 0
105 1 4 0
NB: More recent documentation for Dyalog APL is available at https://docs.dyalog.com/20.0/.
Monadic Logical AND is not defined.
0 1 0 1 ∧ 0 0 1 1
0 0 0 1
15 1 2 7 ∧ 35 1 4 0
105 1 4 0