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      Hexagonal Tilings and Locally C6 Graphs 

      Garijo Royo, Delia; Gitler, I.; Márquez Pérez, Alberto; Revuelta Marchena, María Pastora (Cornell University, 2005)
      We give a complete classification of hexagonal tilings and locally C6 graphs, by showing that each of them has a natural ...
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      Hexagonal Tilings: Tutte Uniqueness 

      Garijo Royo, Delia; Márquez Pérez, Alberto; Revuelta Marchena, María Pastora (Cornell University, 2005)
      We develop the necessary machinery in order to prove that hexagonal tilings are uniquely determined by their Tutte polynomial, showing as an example how to apply this technique to the toroidal hexagonal tiling.
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      Homomorphisms and Polynomial Invariants of Graphs 

      Revuelta Marchena, María Pastora; Garijo Royo, Delia; Nesetril, Jaroslav (2007)
      This paper initiates a study of the connection between graph homomorphisms and the Tutte polynomial. This connection ...
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      Homomorphisms and polynomial invariants of graphs 

      Garijo Royo, Delia; Nesetril, Jaroslav; Revuelta Marchena, María Pastora (Elsevier, 2009)
      This paper initiates a general study of the connection between graph homomorphisms and the Tutte polynomial. This connection ...
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      Homomorphisms between graphs embedded in surfaces 

      Garijo Royo, Delia; Goodall, Andrew; Vena Cros, Lluís (Elsevier, 2024-05)
      We extend the notion of graph homomorphism to cellularly embedded graphs (maps) by designing operations on vertices and ...
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      Improved enumeration of simple topological graphs 

      Kynčl, Jan (2013)
      A simple topological graph T = (V (T ), E(T )) is a drawing of a graph in the plane where every two edges have at most one ...
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      K-Factores en nubes bicromáticas 

      Grima Ruiz, Clara Isabel; Atienza Martínez, María Nieves; Cortés Parejo, María del Carmen; Garijo Royo, Delia; Valenzuela Muñoz, Jesús; Villar Liñán, María Trinidad (2007)
      Consideramos una colección de puntos bicromática y nos preguntamos cuántos puntos adicionales son necesarios considerar ...
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      Measuring the error of linear separators on linearly inseparable data 

      Aronov, Boris; Garijo Royo, Delia; Núñez Rodríguez, Yurai; Rappaport, David; Seara Ojea, Carlos; Urrutia, Jorge (Prensas Universitarias de Zaragoza, 2009-06)
      Given linearly inseparable sets R of red points and B of blue points, we consider several measures of how far they are ...
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      Metaheuristic approaches for the minimum dilation triangulation problem 

      Dorzán, María Gisela; Leguizamón, Mario Guillermo; Mezura Montes, Efrén; Hernández Peñalver, Gregorio (2013)
      We focus on the development of approximated algorithms to find high quality triangulations of minimum dilation because the ...
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      Minimizing the error of linear separators on linearly inseparable data 

      Aronov, Boris; Garijo Royo, Delia; Núñez Rodríguez, Yurai; Rappaport, David; Seara, Carlos; Urrutia, Jorge (Elsevier, 2012)
      Given linearly inseparable sets R of red points and B of blue points, we consider several measures of how far they are ...
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      Monochromatic geometric k-factors for bicolored point sets with auxiliary points 

      Garijo Royo, Delia; Garrido Vizuete, María de los Angeles; Grima Ruiz, Clara Isabel; Márquez Pérez, Alberto; Moreno González, Auxiliadora; Portillo Fernández, José Ramón; Reyes Colume, Pedro; Robles Arias, Rafael; Valenzuela Muñoz, Jesús (2014)
      Given a bicolored point set S, it is not always possible to construct a monochromatic geometric planar k-factor of S. We ...
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      Monochromatic geometric k-factors in red-blue sets with white and Steiner points 

      Garijo Royo, Delia; Garrido Vizuete, María de los Angeles; Grima Ruiz, Clara Isabel; Márquez Pérez, Alberto; Moreno González, Auxiliadora; Portillo Fernández, José Ramón; Reyes Colume, Pedro; Robles Arias, Rafael; Valenzuela Muñoz, Jesús (2009)
      We study the existence of monochromatic planar geometric k-factors on sets of red and blue points. When it is not possible ...
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      Monotone crossing number of complete graphs 

      Balko, Martin; Fulek, Radoslav; Kynčl, Jan (2013)
      In 1958, Hill conjectured that the minimum number of crossings in a drawing of Kn is exactly Z(n) = 1/4 n-1/2/2 n−2/2 ...
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      New results on the robust coloring problem 

      Garijo Royo, Delia; Márquez Pérez, Alberto; Robles Arias, Rafael (Springer, 2024-03-23)
      Many variations of the classical graph coloring model have been intensively studied due to their multiple applications; ...
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      Note on the number of obtuse angles in point sets 

      Fabila Monroy, Ruy; Huemer, Clemens; Tramuns Figueras, Eulàlia (2013)
      In 1979 Conway, Croft, Erd\H{o}s and Guy proved that every set SS of nn points in general position in the plane determines ...
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      On 4-connected geometric graphs 

      García Olaverri, Alfredo; Huemer, Clemens; Tejel Altarriba, Francisco Javier; Valtr, Pavel (2013)
      Given a set S of n points in the plane, in this paper we give a necessary and sometimes sufficient condition to build a 4-connected non-crossing geometric graph on S.
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      On Hamiltonian alternating cycles and paths 

      Claverol, Mercé; García, Alfredo; Garijo Royo, Delia; Seara, Carlos; Tejel, Javier (Elsevier, 2018)
      We undertake a study on computing Hamiltonian alternating cycles and paths on bicolored point sets. This has been an ...
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      On making a graph crossing-critical 

      Hernández Vélez, César Israel; Leaños Macías, Jesús (2013)
      A graph is crossing-critical if its crossing number decreases when we remove any of its edges. Recently it was proved that ...
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      On the barrier-resilience of arrangements of ray-sensors 

      Kirkpatrick, David; Yang, Boting; Zilles, Sandra (2013)
      Given an arrangement A of n sensors and two points s and t in the plane, the barrier resilience of A with respect to s and ...
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      On the determining number and the metric dimension of graphs 

      Cáceres, José; Garijo Royo, Delia; Puertas, María Luz; Seara, Carlos (Combinatorics.org, 2010)
      This paper initiates a study on the problem of computing the difference between the metric dimension and the determining ...