∧ — AND / LCM∧Y gives magnitude/angle pairs along a new last axis. Y is a numeric array; angles are in radians.
∧0j2 ⍝ 2 (1π2)
∧3j4 ⍝ 5 0.9272952180016122
X∧Y gives LCM; on Booleans, AND. Pervasive.
0 0 1 1∧0 1 0 1 ⍝ 0 0 0 1
4x∧6x ⍝ 12x
∧/1 1 0 ⍝ 0
Includes rational and complex LCM. Inputs are finite. Empty reduction identity: one.