El Sahili's arc-deletion conjecture for oriented Hamiltonian paths

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Let TT be a strong tournament of order n≥8n\geq 8, let ee be an arc of TT, and let PP be an oriented path of order nn. El Sahili's conjecture. The tournament T−eT-e contains PP.

This conjecture proposes that every arc deletion from a strong tournament of order at least eight preserves every oriented Hamiltonian path; the supplied context does not report a proof or disproof.

References

Primary source

Mahabba El Sahili and Ayman El Zein, “Oriented Hamiltonian Paths in Tournaments: Stability under Arc Deletion”, arXiv:2512.09332 (2025).

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