Now showing items 1-14 of 14

    • A new approach to the vakonomic mechanics 

      Llibre Saló, Jaume; Ramírez Ros, Rafael; Sadovskaia Nurimanova, Natalia Guennadievna (2014-11-01)
      Article
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      The aim of this paper was to show that the Lagrange-d'Alembert and its equivalent the Gauss and Appel principle are not the only way to deduce the equations of motion of the nonholonomic systems. Instead of them we consider ...
    • ANÀLISI MATEMÀTICA 1 (1r quadrim) 

      Sadovskaia Nurimanova, Natalia Guennadievna (Universitat Politècnica de Catalunya, 2006-11-03)
      Exam
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    • ANÀLISI MATEMÀTICA 1 (Examen 1r quadrim) 

      Sadovskaia Nurimanova, Natalia Guennadievna (Universitat Politècnica de Catalunya, 2007-01-17)
      Exam
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    • ANÀLISI MATEMÀTICA 1 (Examen 1r quadrim) 

      Sadovskaia Nurimanova, Natalia Guennadievna (Universitat Politècnica de Catalunya, 2005-10-28)
      Exam
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    • ANÀLISI MATEMÀTICA 1 (Examen 1r quadrim) 

      Sadovskaia Nurimanova, Natalia Guennadievna (Universitat Politècnica de Catalunya, 2006-01-18)
      Exam
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    • ANÀLISI MATEMÀTICA 1 (Examen 1r quadrim) 

      Sadovskaia Nurimanova, Natalia Guennadievna (Universitat Politècnica de Catalunya, 2004-10-29)
      Exam
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    • ANÀLISI MATEMÀTICA 1 (Examen 2n quadrim) 

      Sadovskaia Nurimanova, Natalia Guennadievna (Universitat Politècnica de Catalunya, 2004-07-01)
      Exam
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    • ANÀLISI MATEMÀTICA 1 (Examen 2n quadrim) 

      Grau Gotés, Maria Àngela; Sadovskaia Nurimanova, Natalia Guennadievna (Universitat Politècnica de Catalunya, 2002-07-03)
      Exam
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    • Anàlisi matemàtica I : Problemes i exercicis amb Maple 

      Avinyó Andrés, Albert; Grau Gotés, Maria Àngela; Martínez, Fernando; Sadovskaia Nurimanova, Natalia Guennadievna (Universitat Politècnica de Catalunya, 1998)
      Lecture notes
      Open Access
    • Cartesian approach for constrained mechanical system with three degree of freedom 

      Ramírez Inostroza, Rafael Orlando; Sadovskaia Nurimanova, Natalia Guennadievna (2010)
      Article
      Open Access
      In the history of mechanics, there have been two points of view for studying mechanical systems: The Newtonian and the Cartesian. According the Descartes point of view, the motion of mechanical systems is described by the ...
    • Centers and uniform isochronous centers of planar polynomial differential systems 

      Llibre Saló, Jaume; Ramirez Inostroza, Rafael; Ramírez Sadovski, Valentín; Sadovskaia Nurimanova, Natalia Guennadievna (2018-09)
      Article
      Open Access
      For planar polynomial vector fields of the form (-y+X(x,y))¿¿x+(x+Y(x,y))¿¿y, where X and Y start at least with terms of second order in the variables x and y, we determine necessary and sufficient conditions under which ...
    • On the 16th Hilbert problem for algebraic limit cycles 

      Llibre Saló, Jaume; Ramírez Inostroza, Rafael Orlando; Sadovskaia Nurimanova, Natalia Guennadievna (2010-03-15)
      Article
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      For a polynomial planar vector field of degree n ≥ 2 with generic invariant algebraic curves we show that the maximum number of algebraic limit cycles is 1 + (n − 1)(n − 2)/2 when n is even, and (n − 1)(n − 2)/2 when n is ...
    • On the 16th Hilbert problem for limit cycles on nonsingular algebraic curves 

      Llibre Saló, Jaume; Ramírez Inostroza, Rafael Orlando; Sadovskaia Nurimanova, Natalia Guennadievna (2011-01-15)
      Article
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      We give an upper bound for the maximum number N of algebraic limit cycles that a planar polynomial vector field of degree n can exhibit if the vector field has exactly k nonsingular irreducible invariant algebraic curves. ...
    • On the dinamics of nonholonomic systems 

      Ramírez Inostroza, Rafael Orlando; Sadovskaia Nurimanova, Natalia Guennadievna (2007)
      Article
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      In the development of nonholonomic mechanics one can observe recurring confusion over the very equations of motion as well as the deeper questions associated with the geometry and analysis of these equations. First of ...