1. Numerical semigroups with distances no admisible between gaps greater than its multiplicityJ. C. Rosales, Manuel B. Branco, Márcio A. Traesel, 2026, original scientific article Abstract: Let A pabe a nonempty subset of positive integers. In this paper we study the set of numerical semigroups that fulfill: if {x,y} ⊆ ℕ\S and x > y > min(S\{0}), then x-y ∉ A. Keywords: Frobenius pseudo-varieties, genus number, numerical semigroups, PD(A)-semigroup and tree (associated to a PD(A)-semigroup) Published in RUP: 21.12.2025; Views: 601; Downloads: 31
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3. Convexity deficit of benzenoidsNino Bašić, Sarah J. Berkemer, Jörg Fallmann, Patrick W. Fowler, Thomas Gatter, Tomaž Pisanski, Nancy Retzlaff, Peter F. Stadler, Sara Sabrina Zemljič, 2019, original scientific article Keywords: benzenoid, fusene, convexity deficit, convex benzenoid, quasi-convex benzenoid, pseudo-convex benzenoid Published in RUP: 28.05.2020; Views: 3476; Downloads: 61
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