On grammatical class:

cu'a
unary mathematical operator: absolute value/norm |a|.
de'o
binary mathematical operator: logarithm; [log/ln a to base b]; default base 10 or e.
fe'a
binary mathematical operator: nth root of; inverse power [a to the 1/b power].
ne'o
unary mathematical operator: factorial; a!.
va'a
unary mathematical operator: additive inverse; [- a].
bai'ei
unary mathematical operator: successor/augment/increment (by one), succ(a) = a++ = a+1
jau'au
unary mathematical operator: length/components of formal string in some base/basis; number of digits/components/entries
ne'oi
unary operator: primorial a#