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Listar por autor "Ortiz Sotomayor, Víctor Manuel"

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Listar por autor "Ortiz Sotomayor, Víctor Manuel"

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    Análisis de estructuras algebraicas mediante la modelización de puzzles y rompecabezas 
    Felipe Román, María José; Sotomayor, Víctor (Editorial Universitat Politècnica de València, 2018-09-26)
    [EN] The subject Algebraic Methods and their Applications of the Master in Mathematical Research is focused on showing the applicability that some abstract algebraic structures have in various scientific areas, in both ...
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    Clases de conjugación y grupos factorizados 
    Ortiz Sotomayor, Víctor Manuel (Universitat Politècnica de València, 2016-07-20)
    [EN] The purpose of this work is to analyze results on the overall structure of a factorised group from certain information about the sizes of the conjugacy classes of some elements of its factors.
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    Conjugacy classes and factorised groups 
    Ortiz Sotomayor, Víctor Manuel (Universitat Politècnica de València, 2019-09-02)
    [ES] Un problema clásico en la teoría de grupos finitos es el estudio de cómo los tamaños de las clases de conjugación influyen sobre la estructura del grupo. En las últimas décadas, numerosos investigadores han obtenido ...
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    Determining hypercentral Hall subgroups in finite groups 
    Sotomayor, Víctor (Springer-Verlag, 2024-09)
    [EN] Let G be a finite group, and let ¿ be a set of primes. The aim of this paper is to obtain some results concerning how much information about the ¿-structure of G can be gathered from the knowledge of the sizes of ...
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    Estrategias de co-enseñanza: matemáticas y economía 
    Maldonado Devis, Mónica; Sotomayor, Víctor (FEDERACION PROFESORES MATEMATICAS, 2022-04)
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    Finite groups whose prime graph on class sizes is a block square 
    Sotomayor, Víctor (Taylor & Francis, 2022-09-02)
    [EN] Let G be a finite group, and let Delta(G) be the prime graph built on its set of conjugacy class sizes: this is the (simple undirected) graph whose vertices are the prime numbers dividing some conjugacy class size of ...
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    Groups whose prime graph on class sizes has a cut vertex 
    Dolfi, Silvio; Pacifici, Emanuele; Sanus, Lucia; Sotomayor, Víctor (Springer-Verlag, 2021-09)
    [EN] Let G be a finite group, and let Delta(G) be the prime graph built on the set of conjugacy class sizes of G: this is the simple undirected graph whose vertices are the prime numbers dividing some conjugacy class size ...
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    Jugando con la Teoría de Grupos: rompecabezas, puzzles y otros entretenimientos matemáticos 
    Felipe, María José; Sotomayor, Víctor (Universitat Politècnica de València, 2018-07-31)
    [EN] In this paper we show how to model and to analyse the solubility of some puzzles, brainteasers and other mathematical toys. We make use of basic group theory concepts and the computational algebraic system GAP(Groups, ...
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    Last row effect: ¿influye el sitting en los resultados del estudiante? 
    Sotomayor, Víctor; Maldonado, Mónica; Villagrasa, Jorge (Editorial Universitat Politècnica de València, 2021-02-01)
    [ES] En la literatura, diversos autores han analizado cómo la ubicación de los estudiantes en el aula afecta a su rendimiento académico y motivación durante las clases. En esta línea, cabe destacar que se han detectado ...
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    Non-solvable Groups whose Character Degree Graph has a Cut-Vertex. I 
    Dolfi, Silvio; Pacifici, Emanuele; Sanus, Lucia; Sotomayor, Víctor (Springer, 2023-07)
    [EN] Let G be a finite group. Denoting by cd(G) the set of degrees of the irreducible complex characters of G, we consider the character degree graph of G: this is the (simple undirected) graph whose vertices are the prime ...
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    Números enteros, relojes y criptografía 
    Felipe Román, María Josefa; Monserrat Delpalillo, Francisco José; Sotomayor, Víctor (Facultad de Ciencias. Departamento de Matemáticas Fundamentales. UNED, 2019)
    [ES] Los rápidos avances científico-tecnológicos determinan un constante y raudo cambio tanto en la vida cotidiana como en la percepción del mundo que nos rodea, lo cual implica una necesidad de adaptación del conocimiento ...
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    On finite groups with square-free conjugacy class sizes 
    Felipe, María José; Martínez Pastor, Ana; Sotomayor, Víctor (University of Isfahan, 2018)
    [EN] We report on fi nite groups having square-free conjugacy class sizes, in particular in the framework of factorised groups.
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    On G-character tables for normal subgroups 
    Felipe Román, María Josefa; Pérez-Ramos, M. D.; Sotomayor, Víctor (Informa UK (National Inquiry Services Center), 2023-04-03)
    [EN] Let N be a normal subgroup of a finite group G. From a result due to Brauer, it can be derived that the character table of G contains square submatrices which are induced by the G-conjugacy classes of elements in N ...
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    On products of groups and indices not divisible by a given prime 
    Felipe Román, María Josefa; Kazarin, Lev S.; Martínez-Pastor, Ana; Sotomayor, Víctor (Springer-Verlag, 2020-12)
    [EN] Let the group G = AB be the product of subgroupsAandB, and letpbe a prime. We prove thatpdoes not divide the conjugacy class size (index) of eachp-regular element of prime power order x is an element of A boolean OR ...
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    On zeros of irreducible characters lying in a normal subgroup 
    Felipe Román, María Josefa; Grittini, N.; Sotomayor, Víctor (Springer-Verlag, 2020-10)
    [EN] Let N be a normal subgroup of a finite group G. In this paper, we consider the elements g of N such that x(g)¿0 for all irreducible characters x of G. Such an element is said to be non-vanishing in G. Let p be a prime. ...
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    Prime power indices in factorised groups 
    Felipe Román, María Josefa; Martínez-Pastor, Ana; Sotomayor, Víctor (Springer-Verlag, 2017)
    [EN] Let the group G = AB be the product of the subgroups A and B. We determine some structural properties of G when the p-elements in A. B have prime power indices in G, for some prime p. More generally, we also consider ...
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    Products of groups and class sizes of pi-elements 
    Felipe Román, María José; Martínez-Pastor, Ana; Sotomayor, Víctor (Springer-Verlag, 2020-02)
    [EN] We provide structural criteria for some finite factorised groups G = AB when the conjugacy class sizes in G of certain pi-elements in A boolean OR B are either pi-numbers or pi'-numbers, for a set of primes pi. In ...
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    Square-free class sizes in products of groups 
    Felipe, María José; Martínez Pastor, Ana; Sotomayor, Víctor (Elsevier, 2017)
    [EN] We obtain some structural properties of a factorised group G = AB, given that the conjugacy class sizes of certain elements in A boolean OR B are not divisible by p(2), for some prime p. The case when G = AB is a ...
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    Zeros of irreducible characters in factorised groups 
    Sotomayor, Víctor; Felipe Román, María Josefa; Martínez-Pastor, Ana (Springer-Verlag, 2019-02)
    [EN] An element g of a finite group G is said to be vanishing inG if there exists an irreducible character of G such that (g)=0; in this case, g is also called a zero of G. The aim of this paper is to obtain structural ...