@Silas It uses Adám's extended ⌸ which takes an array operand as the "vocabulary".

What does % do in Extended?

@1234 you need (u,1) as (0 1 0) 1 is not a meaningful left arg to ⍴

@RubenVerg github.com/abrudz/dyalog-apl-extended/blob/master/…

@Adám can't figure out what it does

not sure what kind of operand it is supposed to take

@RubenVerg Takes a Boolean ("gate") function as operand and derives the corresponding probabalistic function. E.g. ∧% gives ×