Recent Submissions

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    Optimal inequalities, contact delta-invariants and their applications  [Article]

    Chen, Bang-Yen; Martín Molina, Verónica (Malaysian Mathematical Sciences Society, 2013)
    Associated with a k-tuple (n1, . . . , nk) ∈ S(2n + 1) with n ≥ 1, we define a contact δ-invariant, δc (n1, . . . , nk), ...
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    Bochner and conformal flatness on normal complex contact metric manifolds  [Article]

    David E. Blair; Verónica Martín-Molina (Springer, 2010-10-10)
    We will prove that normal complex contact metric manifolds that are Bochner flat must have constant holomorphic sectional ...
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    Subvariedades slant en s-variedades  [PhD Thesis]

    Hans Uber, María Belén (2005-07-15)
    Las subvariedades slant constituyen un tipo importante de subvariedades, tanto en la Geometría Compleja como en la Geometría ...
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    A closed form for slant submanifolds of generalized Sasakian space forms  [Article]

    Alegre Rueda, Pablo Sebastián; Barrera López, Joaquín; Carriazo Rubio, Alfonso (MDPI, 2019-12-13)
    The Maslov form is a closed form for a Lagrangian submanifold of Cm, and it is a conformal form if and only if M satisfies ...
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    An Application of Total-Colored Graphs to Describe Mutations in Non-Mendelian Genetics  [Article]

    Falcón Ganfornina, Raúl Manuel; Falcón Ganfornina, Óscar Jesús; Núñez Valdés, Juan (MDPI, 2019)
    Any gene mutation during the mitotic cell cycle of a eukaryotic cell can be algebraically represented by an isotopism of ...
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    Bi-slant submanifolds of para Hermitian manifolds  [Article]

    Alegre Rueda, Pablo Sebastián; Carriazo Rubio, Alfonso (MDPI, 2019-07-11)
    In this paper, we introduce the notion of bi-slant submanifolds of a para Hermitian manifold. They naturally englobe CR, semi-slant, and hemi-slant submanifolds. We study their first properties and present a whole gallery of examples.
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    The curvature tensor of almost cosymplectic and almost Kenmotsu (κ,μ,ν)-spaces  [Presentation]

    Carriazo Rubio, Alfonso; Martín Molina, Verónica (2013)
    We study the Riemann curvature tensor of (κ,μ, ν)-spaces when they have almost cosymplectic and almost Kenmotsu structures, ...
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    Invariant functions and contractions of algebras.  [PhD Thesis]

    Escobar Rica, Jose María (2019-04-08)
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    The curvature tensor of almost cosymplectic and almost Kenmotsu ( κ, μ, ν ) -space  [Article]

    Carriazo Rubio, Alfonso; Martín Molina, Verónica (Springer, 2013-08)
    We study the Riemann curvature tensor of (κ, µ, ν)-spaces when they have almost cosymplectic and almost Kenmotsu structures, ...
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    Un ejemplo de teoría de bordismo equivalente al PL-bordismo  [Article]

    Quintero Toscano, Antonio Rafael (Academia de Ciencias Exactas, Físicas, Químicas y Naturales de Zaragoza, 1983)
    In this paper we define the CPL-manifolds and we prove, by using a desingularization procedure, that these objects give a ...
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    Cellular covers of local groups  [Article]

    Flores Díaz, Ramón Jesús; Scherer, Jérôme (Springer, 2018-12)
    We prove that, in the category of groups, the composition of a cellularization and a localization functor need not be idempotent. This provides a negative answer to a question of Emmanuel Dror Farjoun.
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    La forma de Maslov de las subvariedades Slant.  [PhD Thesis]

    Barrera López, Joaquín (2018-11-30)
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    Some special types of developable ruled surface  [Article]

    Alegre Rueda, Pablo Sebastián; Arslan, Kadri; Carriazo Rubio, Alfonso; Murathan, Cengizhan; Özturk, Günay (Hacettepe University (Faculty of Science), 2010)
    In this study we consider the focal curve Cγ of a space curve γ and its focal curvatures. We characterize some special ...
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    On certain anti-invariant submanifolds of an S-manifold  [Article]

    Cabrerizo Jaraíz, José Luis; Fernández Fernández, Luis Manuel (Sociedade Portuguesa de Matemática, 1993)
    In this paper, the geometry of certain anti-invariant submanifolds of an S-manifold, namely those which are normal to the structure vector fields, is studied.
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    CR-products of S-manifolds  [Article]

    Fernández Fernández, Luis Manuel (Sociedade Portuguesa de Matemática, 1990)
    In this paper certain CR-submanifolds namely the CR-products, are studied. A characterization theorem is given and the case of CR-products of S-manifolds whose invariant f-sectional curvature is constant, is investigated.
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    Irreducible triangulations of the once-punctured torus  [Article]

    Lawrecenko, Serge; Sulanke, Thom; Villar Liñán, María Trinidad; Zgonnik, Lyudmila Vladimirovna; Chávez de Diego, María José (Sobolev Institute of Mathematics, 2018)
    A triangulation of a surface with fixed topological type is called irreducible if no edge can be contracted to a vertex ...
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    A historical perspective of the theory of isotopisms  [Article]

    Falcón Ganfornina, Raúl Manuel; Falcón Ganfornina, Óscar Jesús; Núñez Valdés, Juan (MDPI, 2018-08-03)
    In the middle of the twentieth century, Albert and Bruck introduced the theory of isotopisms of non-associative algebras ...
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    A classification of totally geodesic and totally umbilical Legendrian submanifolds of (κ, μ)-spaces  [Article]

    Carriazo Rubio, Alfonso; Martín Molina, Verónica; Vrancken, Luc (Springer, 2018)
    We present classifications of totally geodesic and totally umbilical Legendrian submanifolds of (κ, µ)-spaces with Boeckx ...
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    Normal approximations of regular curves and surfaces  [Article]

    Carriazo Rubio, Alfonso; Márquez García, María del Carmen; Ugail, Hassan (Faculty of Sciences and Mathematics, University of Nis, Serbia, 2015)
    Bezier curves and surfaces are two very useful tools in Geometric Modeling, with many applications. In this paper, we will ...
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    Pyramidal values  [Article]

    Flores Díaz, Ramón Jesús; Molina Ferragut, Elisenda; Tejada Cazorla, Juan Antonio (Springer, 2014-06)
    We propose and analyze a new type of values for cooperative TU-games, which we call pyramidal values. Assuming that the ...

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