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⊽ — Double / NOR

Function. Keys: Alt-Minus 9. Hanzi: 双/莫 (雙/莫). Ranks: 0 monadic, 0 0 dyadic

⊽Y: 2Y. Pervasive.

⊽1r3              ⍝ 2r3

X⊽Y is Boolean NOR. Pervasive.

0 0 1 1⊽0 1 0 1   ⍝ $t $f $f $f

Inverse

⊽⁻Y halves Y.

⊽⁻8   ⍝ 4