mekso 7-ary operator: for input (X1 = z, X2 = (ai)= (bj)= p, X5 = q, X6 = h1, X= h2), this word/function outputs/yields \sumn=0^\infty (((\prodi = 1p (ne'o'o(ai,n,1,h= 1q (ne'o'o(bj,n,1,h; by default, X6 = 1 = X7 unless explicitly specified otherwise.
See "ne'o'o" (Pochhammer symbol); however, for the purposes of this definition and regardless of the definition(s) provided at "ne'o'o", here ne'e'o(Y1, Y= \prodk = 0^Y2 - 1 (Y by local definition; ne'o'o(Y1, Y= 1 for all Y2 < 1, regardless of the other inputs Ym (so long as they belong to the domain); by default, Y4 = 1 unless explicitly defined otherwise. For the main definition: z is a complex number, and (ai) and (bj) are (pre)defined sequences (id est: functions with domains being exactly the set of exactly all positive integers) such that, for all positive integer indices i and j respectively, their terms/outputs are complex numbers; both (ai) and (bj) are indexed starting at 1; also, p, q, h1, h are positive integers; by default, h1 = 1 = h2 unless explicitly specified otherwise. X2 and X3 may require usage of "mau'au" and "zai'ai".