unary mekso operator: (analytically continued) Riemann zeta function zeta(z), for complex-valued input z.

- 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].
- gei'au
- mekso 7-ary operator: for input (X
_{1 }= z, X_{2 }= (a_{i)}= (b_{j)}= p, X_{5 }= q, X_{6 }= h_{1, X}= h_{2)}, this word/function outputs/yields \sum_{n}=0^\infty (((\prod_{i }= 1^{p (}ne'o'o(a_{i,n,1,h}= 1^{q (}ne'o'o(b_{j,n,1,h}; by default, X_{6 }= 1 = X_{7}unless explicitly specified otherwise. - ne'o
- unary mathematical operator: factorial; a!.
- ne'o'a
- mekso ternary operator: the generalized incomplete (factorial-extending) Pi function; for input (X
_{1, X}this word outputs the definite integral of t^X_{1 e^-t}with respect to t from X_{2}to X_{3}(see notes for default values). - ne'o'au
- mekso quaternary operator: polygamma function; for input X
_{1, X}, outputs the (-X_{2)}th derivative of Log(ne'o'a(X_{1, X})) with respect to X_{1}. - ne'o'o
- mekso quaternary operator – Pochhammer symbol: with/for input (X
_{1, X}, this word/function outputs \prod_{k }= 0^X_{2 - 1 (X}; by default, X_{4 }= 1 unless explicitly defined otherwise. - pau'au
- ternary mekso operator: p-adic valuation; outputs (positive) infinity if x
_{1 }= 0 and, else, outputs sup(Set(k: k is a nonnegative integer, and ((1 - x_{3)x}divides x_{1))}, where p_{n}is the nth prime (such that p_{1 }= 2). - po'i'ei
- n-ary mekso operator: for an input of ordered list of ordered pairs ((X
_{1, Y}, it outputs formal generalized rational function (x - X_{1)^Y}in the adjoined indeterminate (here: x). - pu'e'ei
- mekso binary operator: generate span; outputs span(X
_{1, X}= span_{X}; set of all (finite) sums of terms of form c v, where v is an element of algebraic structure X_{1}(wherein scalar multiplication and summation is defined), and c is a scalar belonging to ring X_{2}. - tai'i'au
- 8-ary mekso operator: the X
_{1}th nonnegative sum of X_{2}mutually-distinct perfect X_{3}th-powers (i.e.: of integers) in X_{4}mutually truly-distinct ways, requiring exactly X_{5}terms to be negative in each sum (counting with(out^X_{6}) multiplicity), requiring exactly X_{7}terms to be repeated between sums (counting with(out^X_{8}) multiplicity), according to the usual ordering of the integers. - va'a
- unary mathematical operator: additive inverse; [- a].
- vei'o
- binary mekso operator: form quotient space X
_{1/X}. - bai'ei
*(exp!)* - unary mathematical operator: successor/augment/increment (by one), succ(a) = a++ = a+1
- cu'ai
*(exp!)* - binary mathematical operator: vector norm/magnitude of vector a in structure (normed vector space) b.
- de'au'u
*(exp!)* - mekso ternary operator: positive super-logarithm; the super-logarithm (inverse operator of hyper-operator with respect to "height" of power tower) of a with base b and of order c-2.
- fe'au'u
*(exp!)* - mekso ternary operator: positive super-root; the bth super-root (inverse operator of hyper-operator with respect to base) of a of order c-2.
- fei'i
*(exp!)* - mekso variable-arity (at most ternary) operator: number of prime divisors of number X
_{1}, counting with or without multiplicity according to the value X_{2}(1 xor 0 respectively; see note for equality to -1 and for default value), in structure X_{3}. - jau'au
*(exp!)* - unary mathematical operator: length/number of components/terms of/in object/array/formal string/sequence/word/text in some alphabet/base/basis which includes each digit; number of digits/components/entries
- ka'au
*(exp!)* - mekso unary operator: cardinality (#, | |)
- ne'oi
*(exp!)* - unary operator: primorial a#
- pau'oi
*(exp!)* - unary mathematical operator: predecessor/diminish/decrement (by one), \operatornamepred(a) = a-- = a-1
- pi'ei'oi
*(exp!)* - mathematical ternary operator: prime-generating function.
- zei'i'au
*(exp!)* - unary mekso operator: (analytically continued) Riemann zeta function zeta(z), for complex-valued input z.

- ma'oi'e
*(exp!)* - Like "ma'oi" but outputs the officially-designated/canonical sub-selma'o (if any) to which the immediately following and quoted word (cmavo) belongs, otherwise outputting the whole relevant selma'o in fashion equivalent to "ma'oi".