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math.CO2020★ 1 cited
Generalized permutations related to the degenerate Eulerian numbers
Orli Herscovici
In this work we propose a combinatorial model that generalizes the standard definition of permutation. Our model generalizes the degenerate Eulerian polynomials and numbers of Carl…
math.CO2020
Harary polynomials
Orli Herscovici, Johann A. Makowsky, Vsevolod Rakita
Given a graph property , F. Harary introduced in 1985 -colorings, graph colorings where each colorclass induces a graph in . Let $χ_{\mathcal…