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Resultats globals: 7 registres trobats en 0.04 segons.
Articles, 7 registres trobats
Articles 7 registres trobats  
1.
8 p, 292.2 KB On new infinite families of completely regular and completely transitive codes / Borges, J. (Joaquim) (Universitat Autònoma de Barcelona. Departament d'Enginyeria de la Informació i de les Comunicacions) ; Rifà i Coma, Josep (Universitat Autònoma de Barcelona. Departament d'Enginyeria de la Informació i de les Comunicacions) ; Zinoviev, Victor (Russian Academy of Sciences)
In two previous papers we constructed new families of completely regular codes by concatenation methods. Here we determine cases in which the new codes are completely transitive. For these cases we also find the automorphism groups of such codes. [...]
2024 - 10.1016/j.disc.2023.113840
Discrete Mathematics, Vol. 347, Issue 4 (April 2024) , art. 113840  
Registre complet - Creative Commons
2.
15 p, 454.5 KB Hypersurface model-fields of definition for smooth hypersurfaces and their twists / Badr, Eslam (Cairo University. Department of Mathematics (Egypt)) ; Bars Cortina, Francesc (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
Given a smooth projective variety of dimension n − 1 ≥ 1 defined over a perfect field k that admits a non-singular hypersurface model in Pnk− over k−, a fixed algebraic closure of k, it does not necessarily have a non-singular hypersurface model defined over the base field k. [...]
2020 - 10.4064/aa180524-31-7
Acta Arithmetica, Vol. 194 (March 2020) , p. 267-280  
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3.
12 p, 278.8 KB Automorphism groups of non-singular plane curves of degree 5 / Badr, Eslam (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Bars Cortina, Francesc (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
Let Mg be the moduli space of smooth, genus g curves over an algebraically closed field K of zero characteristic. Denote by Mg(G) the subset of Mg of curves δ such that G (as a finite nontrivial group) is isomorphic to a subgroup of Aut(δ), and let Mg(G) be the subset of curves δ such that G ≅ Aut(δ), where Aut(δ) is the full automorphism group of δ. [...]
2016 - 10.1080/00927872.2015.1087547
Communications in Algebra, Vol. 44, Issue 10 (June 2016) , p. 4327-4340  
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4.
19 p, 351.2 KB On twists of smooth plane curves / Badr, Eslam (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Bars Cortina, Francesc (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Lorenzo García, Elisa (Universiteit Leiden)
Given a smooth curve defined over a field k that admits a non-singular plane model over k, a fixed separable closure of k, it does not necessarily have a non-singular plane model defined over the field k. [...]
2019 - 10.1090/mcom/3317
Mathematics of Computation, Vol. 88, Issue 315 (March 2019) , p. 421-438  
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5.
16 p, 307.2 KB On the locus of smooth plane curves with a fixed automorphism group / Badr, Eslam (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Bars Cortina, Francesc (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
Let Mg be the moduli space of smooth, genus g curves over an algebraically closed field K of zero characteristic. Denote by Mg(G) the subset of Mg of curves δ such that G (as a finite non-trivial group) is isomorphic to a subgroup of Aut(δ), the full automorphism group of δ, and let Mg(G) ~ be the subset of curves δ such that G≅ Aut (δ). [...]
2016 - 10.1007/s00009-016-0705-9
Mediterranean Journal of Mathematics, Vol. 13, Issue 5 (October 2016) , p. 3605-3627  
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6.
25 p, 374.7 KB Plane non-singular curves with an element of "large" order in its automorphism group / Badr, Eslam (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Bars Cortina, Francesc (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
Let Mg be the moduli space of smooth, genus g curves over an algebraically closed field K of zero characteristic. Denote by Mg(G) the subset of Mg of curves δ such that G (as a finite nontrivial group) is isomorphic to a subgroup of Aut(δ) and let Mg(G)˜ be the subset of curves δ such that G≅Aut(δ), where Aut(δ) is the full automorphism group of δ. [...]
2016 - 10.1142/S0218196716500168
International Journal of Algebra and Computation, Vol. 26, Issue 2 (March 2016) , p. 399-433  
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7.
9 p, 1.1 MB Partial permutation decoding for binary linear Hadamard codes / Barrolleta, Roland David ; Villanueva, M. (Mercè) (Universitat Autònoma de Barcelona. Departament d'Enginyeria de la Informació i de les Comunicacions)
Permutation decoding is a technique which involves finding a subset S, called PD-set, of the permutation automorphism group PAut(C) of a code C in order to assist in decoding. A method to obtain s-PD-sets of size s + 1 for partial permutation decoding for the binary linear Hadamard codes H m of length 2 m , for all m ≥ 4 and 1 < s ≤ (2 m − m − 1)/(1 + m) , is described. [...]
2014 - 10.1016/j.endm.2014.08.006
Electronic notes in discrete mathematics, Vol. 46 (Sep. 2014) , p. 35-42  
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