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Further results on non-negativity conjectures for copartition products

Li, Haijun
arXiv (OAI Expanded) · Papers
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combinatorics
Burson and Eichhorn proposed infinite and finite coefficientwise non-negativity conjectures for products arising from copartitions. We obtain several further results. First, both products admit decompositions into elementary local blocks, and the finite conjecture reduces exactly to its diagonal spe
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