mai'u'e VUhU3 experimental cmavo

mekso unary operator: for permutation X1 as input, the output is (-1)^N(X1), where N(s) is the number of inversions in permutation s.

See also: "mai'u".


In notes:

mai'u
unary mekso operator: signum function
mai'u'ei
mekso unary operator: Levi-Civita symbol; for input n-tuple (a1, a ... , an), where n is a strictly positive integer, the output is \varepsilona, where \varepsilon is the Levi-Civita symbol under the convention of mapping (1, 2, ..., n) to 1.