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Elementary Proofs of Infinitely Many Congruences for 8-Cores
Authors:Kolitsch  Louis W.  Sellers  James A.
Affiliation:(1) Department of Mathematics and Computer Science, The University of Tennessee at Martin, 424 Humanities Building, Martin, Tennessee, 38238–5049;(2) Department of Science and Mathematics, Cedarville College, P.O. Box 601, Cedarville, Ohio, 45314
Abstract:Using a very elementary argument, we prove the congruences
$$begin{gathered}  a_8 (81n + 21) equiv 0(bmod 2){text{   and}} hfill   a_8 (81n + 75) equiv 0(bmod 2) hfill  end{gathered} $$
where a8(n) is the number of 8-core partitions of n. We also exhibit two infinite families of congruences modulo 2 for 8-cores.
Keywords:partitions  congruences  t-cores
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