NB: More recent documentation for Dyalog APL is available at https://docs.dyalog.com/20.0/.

Logical Or ∨

Monadic Logical Or is not defined.

Dyadic Logical Or means

Greatest Common Divisor (Or) 

      0 1 0 1 ∨ 0 0 1 1
0 1 1 1

      15 1 2 7 ∨ 35 1 4 0
5 1 2 7

Language Elements