Abstract Let pk,3(n) count the number of 2-color partition triples of n where one of the colors appears only in parts that are multiples of k and Bk,ℓ(n) denote the… Click to show full abstract
Abstract Let pk,3(n) count the number of 2-color partition triples of n where one of the colors appears only in parts that are multiples of k and Bk,ℓ(n) denote the number of (k, ℓ)-regular bipartitions of n. In this paper, we prove two infinite families of congruences modulo 5 for p5,3(n), three infinite families of congruences modulo powers of 5 for p25,3(n), and six infinite families of congruences modulo powers of 5 for B5,25(n). For instance, for any integers n ≥ 0 and α ≥ 1, we have and
               
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