Combinatorial construction of known positive series for partition classes defined by Capparelli, Meurman, Primc, and Primc in the $k$=1 Case

Abstract

Recently, Capparelli, Meurman, A. Primc and M. Primc introduced a class of colored partitions which has since been called CMPP partitions. This generalized earlier work by M. Primc and Šikić, and by Trupčević. One main reason why CMPP partitions are significant is the authors' conjecture that the generating functions are infinite products in all cases. CMPP partitions are true extensions of the partition classes in the Rogers-Ramanujan-Gordon identities which are defined by difference conditions. As such, a natural question is to look for generating functions similar to the series side of Andrews-Gordon identities. Russell found such bivariate series for one case. These evidently positive series overlap with the positive series found earlier by Griffin, Ono and Warnaar in the edge cases. Russell used symbolic computation in the proofs. We will combinatorially interpret Russell's bivariate series extending one case of the series due to Griffin, Ono and Warnaar in a base partition and moves setting, and supply some missing cases, as well.