Modulo 32 congruences for Schur-type overpartition numbers

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Let S(n)S(n) denote the Schur-type overpartition function considered in the paper, and let nn be a nonnegative integer. Modulo 32 congruences. The following congruences are supported by computational evidence:

S(256n+123)=S(4(64n+31)−1)≡S(64n+31)(mod32),S(256n+171)=S(4(64n+43)−1)≡S(64n+43)(mod32),S(256n+235)=S(4(64n+59)−1)≡S(64n+59)(mod32),S(256n+251)=S(4(64n+63)−1)≡S(64n+63)(mod32).\begin{aligned} S(256n+123)&=S(4(64n+31)-1)\equiv S(64n+31)\pmod{32},\\ S(256n+171)&=S(4(64n+43)-1)\equiv S(64n+43)\pmod{32},\\ S(256n+235)&=S(4(64n+59)-1)\equiv S(64n+59)\pmod{32},\\ S(256n+251)&=S(4(64n+63)-1)\equiv S(64n+63)\pmod{32}. \end{aligned}

These congruences are presented as computationally supported directions for further work; the paper does not establish them, and their status remains open.

References

Primary source

Shane Chern, Robson da Silva and James A. Sellers, “Elementary Proofs of Arithmetic Properties for Schur-Type Overpartitions Modulo Small Powers of 2”, arXiv:2308.06425 (2023).

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