Artículos

• On Vector Fields in C3 without a Separatrix

  J. Olivares Vázquez

  13

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• Erratum

  Christian Léger

  35

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• Best Approximants for Bounded Functions and the Lattice Operations

  M.S. Roversi, J.P. Prolla, A.O. Chiacchio

  39

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• A Geometric Proof of the Perron-Frobenius Theorem

  R. Trias Ujué, Alberto Borobia

  57

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• Conos de luz

  Javier Lafuente López

  65

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• Exact Controllability of a Pluridimensional Coupled Problem

  Serge Nicaise

  91

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• On a Quasi-Variational Inequality Arising in Semiconductor Theory

  José Francisco Rodrigues

  137

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