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      Generators and closed classes of groups 

      Flores Díaz, Ramón Jesús; Rodríguez, José L. (Universitat Autònoma de Barcelona, Departament de Matemàtiques, 2021)
      We show that, in the category of groups, every singly-generated class which is closed under isomorphisms, direct limits, ...
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      Graph operations and Lie algebras 

      Cáceres González, José; Ceballos González, Manuel; Núñez Valdés, Juan; Puertas González, María Luz (Taylor & Francis, 2013)
      This paper deals with several operations on graphs and combinatorial structures linking them with their associated Lie ...
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      Graphs associated with nilpotent Lie algebras of maximal rank 

      Díaz Delgado, José Eduardo; Fernández Mateos, Rafael; Fernández Ternero, Desamparados; Núñez Valdés, Juan (European Mathematical Society, 2003)
      In this paper, we use the graphs as a tool to study nilpotent Lie algebras. It implies to set up a link between graph ...
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      Groups which are not properly 3-realizable 

      Funar, Louis; Fernández Lasheras, Francisco Jesús; Repovš, Dušan (European Mathematical Society, 2012)
      A group is properly 3-realizable if it is the fundamental group of a compact polyhedron whose universal covering is proper ...
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      Homogeneity test for functional data 

      Flores Díaz, Ramón Jesús; Lillo Rodríguez, Rosa Elvira; Romo Urroz, Juan (Taylor & Francis, 2017)
      In the context of functional data analysis, we propose new two sample tests for homogeneity. Based on some well-known depth ...
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      Homotopy idempotent functors on classifying spaces 

      Castellana Vila, Natàlia; Flores Díaz, Ramón Jesús (American Mathematical Society, 2015-02)
      Fix a prime p. Since their definition in the context of Localization Theory, the homotopy functors PBZ/p and CWBZ/p have ...
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      Homotopy in digital spaces 

      Ayala Gómez, Rafael; Domínguez Murillo, Eladio; Francés Román, Ángel Ramón; Quintero Toscano, Antonio Rafael (Elsevier, 2003-01-15)
      The main contribution of this paper is a new “extrinsic” digital fundamental group that can be readily generalized to ...
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      Ideas para enseñar: vidas de matemáticos que abrazaron la fe religiosa 

      Arroyo Castilleja, María; Núñez Valdés, Juan; Recacha González, Silvia (Federación Iberoamericana de Educación Matemática, 2014-03)
      En este artículo se muestran las biografías de una serie de matemáticos, algunos de ellos muy conocidos por la obra ...
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      Induced structures on slant submanifolds of metric F-manifolds 

      Fernández Fernández, Luis Manuel; Hans Uber, María Belén (Indian National Science Academy, 2008-10)
      We study whether it is possible to obtain an induced structure on a slant submanifold of a metric f-manifold. Moreover, ...
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      Invariant complex structures on 6-nilmanifolds classification, Frölicher spectral sequence and special Hermitian metrics 

      Ceballos González, Manuel; Otal Germán, Antonio; Ugarte Vilumbrales, Luis; Villacampa Gutiérrez, Raquel (Springer, 2016-01)
      We classify invariant complex structures on 6-dimensional nilmanifolds up to equivalence. As an application, the behaviour ...
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      Irreducible triangulations of the Möbius band 

      Chávez de Diego, María José; Lawrencenko, Serge; Quintero Toscano, Antonio Rafael; Villar Liñán, María Trinidad (Institute of Mathematics and Computer Science of the Academy of Sciences of Moldova, 2014)
      A complete list of irreducible triangulations is identified on the Möbius band.
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      Irreducible triangulations of the once-punctured torus 

      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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      Isogroups and isosubgroups 

      Falcón Ganfornina, Raúl Manuel; Núñez Valdés, Juan (Real Academia de Ciencias Exactas, Físicas y Naturales, 2003)
      The main goal of this paper is to give a mathematical foundation, serious and consistent, to some parts of Santilli’s ...
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      Isomorphism and Isotopism Classes of Filiform Lie Algebras of Dimension up to Seven Over Finite Fields 

      Falcón Ganfornina, Óscar Jesús; Falcón Ganfornina, Raúl Manuel; Núñez Valdés, Juan (Springer, 2016)
      Since the introduction of the concept of isotopism of algebras by Albert in 1942, a prolific literature on the subject has ...
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      Isorings and related isostructures 

      Falcón Ganfornina, Raúl Manuel; Núñez Valdés, Juan (Zanichetti, 2005)
      Lo scopo principale di questo articolo è dare una fondazione matematica, seria e costante a delle parti dell’isoteoria di ...
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      Isotopism and isomorphism classes of certain Lie algebras over finite fields 

      Falcón Ganfornina, Óscar Jesús; Falcón Ganfornina, Raúl Manuel; Núñez Valdés, Juan (Springer, 2015)
      In the current paper, we study the distribution into isotopism and isomorphism classes of the relevant family FpnFnp of ...
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      Isotropic submanifolds of pseudo-Riemannian spaces 

      Cabrerizo Jaraíz, José Luis; Fernández Andrés, Manuel; Gómez Casanueva, Juan Salvador (Elsevier, 2012-09)
      The family of all the submanifolds of a given Riemannian or pseudo-Riemannian manifold is large enough to classify them ...
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      Isotropy and marginally trapped surfaces in a spacetime 

      Cabrerizo Jaraíz, José Luis; Fernández Andrés, Manuel; Gómez Casanueva, Juan Salvador (IOP Publishing, 2010)
      In this note we shall study the notions of isotropic and marginally trapped surface in a spacetime by using a differential ...
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      Jugueteando con grafos 

      Núñez Santiago, Rocío; Núñez Valdés, Juan; Paluzo Hidalgo, Eduardo; Salguero Quirós, Elena (Federación Iberoamericana de Sociedades de Educación Matemática, 2016-06)
      En este artículo se resuelven una serie de problemas extraídos de diferentes situaciones de la vida real con ayuda de ...
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      K-homology and K-theory for the lamplighter groups of finite groups 

      Flores Díaz, Ramón Jesús; Pooya, Sanaz; Valette, Alain (London Mathematical Society, 2017-08)
      Let F be a finite group. We consider the lamplighter group L = F ≀ Z over F. We prove that L has a classifying space for ...