Year: 2026
Type: preprint
Abstract: We introduce the directed cyclic difference inventory $D_n(\mathbf{m})$ to study Latin Eulerian numbers restricted to row-reorderings of the cyclic Latin square, offering an orientation-sensitive refinement of the prescribed-edge-length Hamiltonian path problem. We establish exact enumeration formulas, symmetries, and realizability obstructions for this inventory. Furthermore, we reduce the cyclic total-ascent statistic directly to endpoint-refined Eulerian statistics via the identity $Σ(L_π) = n \operatorname{asc}(π) + π(1) - π(n)$, yielding a closed-form expression for the cyclic Latin-Eulerian polynomial.
Source: arXiv (Cornell University)
Authors: Mirzavaziri, Madjid, Yaqubi, Daniel
Institutions: Ferdowsi University of Mashhad, University of Torbat-e Jam
Language: English
Subfield: Discrete Mathematics and Combinatorics
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7214390211