Principal  

CONGRESOS DE INVESTIGACIÓN

• 60) On a novel rational-polynomial method to approximate the matrix logarithm. (E. DEFEZ, J. IBÁÑEZ, J.M. ALONSO, J. SASTRE, A. IBÁÑEZ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2025.
   
• 59) Exploring Matrix Exponentials via Charlier Polynomials. (J.M. ALONSO, E. DEFEZ, J. IBÁÑEZ, J. SASTRE, A. IBÁÑEZ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2025.
   
• 58) On the use of Euler polynomials to approximate the hyperbolic matrix cosine. (J.M. ALONSO, E. DEFEZ, J. IBÁÑEZ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2024.
   
• 57) An efficient method to compute the matrix cosine based on Chebyshev polynomials. (E. DEFEZ, J. IBÁÑEZ, J.M. ALONSO)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2024.
   
• 56) On the use of Euler polynomials to approximate the matrix cosine. (J.M. ALONSO, E. DEFEZ, J. IBAÑEZ, J. SASTRE)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2023.
   
• 55) An efficient method to compute the matrix exponential based on Chebyshev polynomials. (E. DEFEZ, J. IBAÑEZ, J.M. ALONSO, J. PEINADO)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2023.
   
• 54) On an accurate method to compute the matrix logarithm. (E. DEFEZ, J. IBAÑEZ, J.M. ALONSO, J. REAL HERRÀIZ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2022.
   
• 53) Euler polynomials for the matrix exponential approximation . (P. ALONSO-JORDÁ, J.M. ALONSO, J. IBÁÑEZ, E. DEFEZ)
  International Conference On Computational And Mathematical Methods In Science And Engineering (CMMSE), Rota, (España), 2022.
   
• 52) Accurate approximation of the hyperbolic matrix cosine using Bernoulli matrix polynomials. (E. DEFEZ, J. IBAÑEZ, J.M. ALONSO, J. PEINADO, J. SASTRE)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2021.
   
• 51) On the numerical simulation of harmonic oscillators on the lattice. (M. TUNG, J. IBAÑEZ, E. DEFEZ, J.R. HERRÁIZ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2021.
   
• 50) A new and accurate method to compute the matrix logarithm . (J. IBÁÑEZ, E. DEFEZ, P. ALONSO-JORDÁ, J.M. ALONSO, J. SASTRE)
  International Conference On Computational And Mathematical Methods In Science And Engineering (CMMSE) and First Conference On High Performance Computing (CHPC), Rota, (España), 2021.
   
• 49) A Taylor Algorithm for Computing the Action of the Matrix Exponential on a Vector. (P. ALONSO-JORDÁ, J. IBÁÑEZ, J. M. ALONSO, E. DEFEZ, J. SASTRE)
  20th International Conference On Computational And Mathematical Methods In Science And Engineering (CMMSE), Rota, (España), 2020.
   
• 48) Approximating the hyperbolic tangent matrix function. (E. DEFEZ, J. J. IBAÑEZ, J. M. ALONSO, P. ALONSO-JORDÁ, J. SASTRE)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2020.
   
• 47) An introduction to the “Group of High Performance Scientic Computing" (HIPERSC). (E. DEFEZ, J. IBÁÑEZ, J. SASTRE, J. PEINADO, M. TUNG)
  9th INTERNATIONAL CONGRESS ON INDUSTRIAL AND APPLIED MATHEMATICS (ICIAM 2019), Valencia, 2019.
   
• 46) Computing matrix functions by matrix Bernoulli series. (E. DEFEZ, J. IBÁÑEZ, J. PEINADO, P. ALONSO-JORDÁ, J. M. ALONSO)
  19th International Conference On Computational And Mathematical Methods In Science And Engineering (CMMSE), Rota, (España), 2019.
   
• 45) Fast taylor polynomial evaluation for the computation of the matrix cosine. (J. SASTRE, J. IBÁÑEZ, P. ALONSO-JORDÁ, J. PEINADO, E. DEFEZ)
  18th International Conference On Computational And Mathematical Methods In Science And Engineering (CMMSE), Rota, (España), 2018.
   
• 44) Some new Hermite matrix polynomials series expansions and their applications in hyperbolic matrix sine and cosine approximation. (E. DEFEZ, J. J. IBAÑEZ, J. PEINADO, J. SASTRE, P. ALONSO-JORDÁ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2018.
   
• 43) Approximating a class of non-linear third-order ordinary differential problems.(E. DEFEZ, M. M. TUNG, J. J. IBAÑEZ, J. SASTRE)
  20th EUROPEAN CONFERENCE ON MATHEMATICS FOR INDUSTRY, Budapest (Hungría), 2018. Publicada en Progress in Industrial Mathematics at ECMI 2018 (ISBN: 978-3-030-27552-5), 2018.
   
• 42) On new rational-polynomial Hermite matrix expansions. Application for the matrix cosine approximation. (E. DEFEZ, J. IBÁÑEZ, J. PEINADO, J. SASTRE, P. ALONSO-JORDÁ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2017.
   
• 41) A fast implementation of matrix trigonometric functions sine and cosine. (P. ALONSO-JORDÁ, J. PEINADO, J. IBÁÑEZ, J. SASTRE, E. DEFEZ)
  17th International Conference On Computational And Mathematical Methods In Science And Engineering (CMMSE), Rota, (España), 2017.
   
• 40) A new efficient and accurate spline algorithm for the matrix exponential computation. (E. DEFEZ, J. IBÁÑEZ, J. SASTRE, J. PEINADO, P. ALONSO-JORDÁ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2016.
   
• 39) A class of nonlinear fourth-order ordinary differential problems. (E. DEFEZ, M. TUNG, J. IBÁÑEZ, J. SASTRE)
  19th EUROPEAN CONFERENCE ON MATHEMATICS FOR INDUSTRY, Santiago de Compostela, 2016. Publicada en Progress in Industrial Mathematics at ECMI 2016 (ISBN: 978-3-030-09685-4), 2016.
   
• 38) Efficient and accurate algoritms for computing matrix trigonometric functions. (P. ALONSO-JORDÁ, J. IBÁÑEZ, J. SASTRE, E. DEFEZ, J. PEINADO)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2015.
   
• 37) High perfomance computing of the matrix exponential. (P. RUIZ, J. IBÁÑEZ, J. SASTRE, E. DEFEZ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2014.
   
• 36) Solving engineering models which use hyperbolic sine and cosine matrix functions. (E. DEFEZ, J. SASTRE, JAVIER J. IBÁÑEZ, P. RUIZ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2013.
   
• 35) New advances on matrix exponential computations for engineering problems. (P. RUIZ, J. SASTRE, J. IBÁÑEZ, E. DEFEZ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2012.
   
• 34) Computing hyperbolic matrix functions using orthogonal matrix polynomials. (E. DEFEZ, M. M. TUNG, J. J. IBAÑEZ, A. HERVÁS)
  17th EUROPEAN CONFERENCE ON MATHEMATICS FOR INDUSTRY, Lund (Suecia), 2012. Publicada en Progress in Industrial Mathematics at ECMI 2012 (ISBN: 978-3-319-35846-8), 2012.
   
• 33) Solving engineering models using matrix functions. (E. DEFEZ , J. SASTRE, , JAVIER J. IBÁÑEZ, P. RUIZ)
  IMM Conference. Mathematical modelling in engineering & human behaviour, Valencia, 2011.
   
• 32) Computing matrix functions solving coupled differential models in engineering (J. SASTRE, E. DEFEZ, J. IBÁÑEZ, M. TUNG)
  IMM conference. Mathematical models of addictive behaviour, medicine & engineering, Valencia, 2010.
   
• 31) Computing matrix exponential to solve coupled differential models in engineering. (J. SASTRE , J. IBÁÑEZ, E. DEFEZ, P. RUIZ)
  IMM conference. Mathematical models of addictive behaviour, medicine & engineering, Valencia, 2010.
   
• 30) Higher-order matrix splines and second order matrix models. (E. DEFEZ, M. TUNG, J. IBAÑEZ, L. SOLER)
  16th EUROPEAN CONFERENCE ON MATHEMATICS FOR INDUSTRY, Wuppertal (Alemania), 2010. Publicada en Progress in Industrial Mathematics at ECMI 2010 (ISBN: 978-3-642-42759-6), 2010.
   
• 29) Numerical solutions of matrix differential models in engineering using higher-order matrix splines. (E. DEFEZ, J. IBÁÑEZ, M. TUNG, J. SASTRE)
  XI jornadas de investigación y fomento de la multidisciplinariedad: mathematical models in medicine business & engineering, Valencia, 2009.
   
• 28) Sobre la evaluación de funciones matriciales con Mathematica. (E. DEFEZ, R. COMPANY, E. PONSODA)
  III Congreso de Mathematica en España, Salamanca, 2009.
   
• 27) Computing matrix functions for solving coupled differential models. (E. DEFEZ, J. SASTRE, J. IBÁÑEZ , P. RUIZ)
  X Jornadas de investigación y fomento de la multidisciplinariedad. Mathematical models in medicine & engineering, Valencia, 2008.
   
• 26) Numerical approximations for incomplete second-order matrix models in engineering. (E. DEFEZ, M. M. TUNG, J. J. IBAÑEZ)
  X Jornadas de investigación y fomento de la multidisciplinariedad. Mathematical models in medicine & engineering, Valencia, 2008.
   
• 25) Approximate numerical solutions of autonomous second-order matrix models using cubic-matrix splines. (E. DEFEZ, M. M. TUNG, J. J. IBAÑEZ, A. HERVÁS)
  15th EUROPEAN CONFERENCE ON MATHEMATICS FOR INDUSTRY, Londres (Reino Unido), 2008. Publicada en Progress in Industrial Mathematics at ECMI 2008 (ISBN: 978-3-662-50596-0), 2008.
   
• 24) A stable numerical method for solving variable coefficient advection-diffusion models. (E. PONSODA, E. DEFEZ, M.D. ROSELLÓ, J.V. ROMERO)
  IX Jornadas de investigación y fomento de la multidisciplinaridad del IMM, Valencia, 2007.
   
• 23) Cubic-matrix splines and second-order matrix models (E. DEFEZ, M. TUNG, A. HERVÁS, L. SOLER)
  14th EUROPEAN CONFERENCE ON MATHEMATICS FOR INDUSTRY, Leganés, 2006. Publicada en Progress in Industrial Mathematics at ECMI 2006 (ISBN: 978-3-540-71991-5), 2006.
   
• 22) A stable ce-se numerical method for time-dependent advection-diffusion equation. (E. DEFEZ, R. COMPANY, L. JÓDAR, E. PONSODA)
  14th EUROPEAN CONFERENCE ON MATHEMATICS FOR INDUSTRY, Leganés, 2006. Publicada en Progress in Industrial Mathematics at ECMI 2006 (ISBN: 978-3-540-71991-5), 2006.
   
• 21) Splines cúbicos matriciales y ecuaciones diferenciales matriciales de primer orden. (E. DEFEZ, A. HERVÁS, L. SOLER)
  XIX CEDYA / IX Congreso de matemática aplicada. Leganés, 2005.
   
• 20) Aplicación del método Ce-Se a la ecuación de advección-difusion con coeficientes variables. (E. DEFEZ, R. COMPANY, E: PONSODA, L. JÓDAR)
  Congreso de métodos numéricos en ingeniería, Granada, 2005. Publicada en las Actas de dicho congreso (ISBN: 84-95999-74-9), 2005.
   
• 19) Bounds on matrix Hermite polynomials, and matrix exponential computation. (A. LAW, E. DEFEZ, L. JÓDAR)
  5th International Congress On Industrial And Applied Mathematics (ICIAM 2003), Sydney (Australia), 2003.
   
• 18) Un método de Schur-Frechet para el cálculo de la exponencial de una matriz. (L. SOLER, E. DEFEZ, A. HERVÁS)
  XVIII CEDYA / VIII Congreso de matemática aplicada, Tarragona, 2003. Publicado en CD-ROM.
   
• 17) Estudio comparativo de dos procedimientos para el cálculo de la exponencial de una matriz. (J. G. MORA, E. DEFEZ, A. HERVÁS)
  XVIII CEDYA / VIII Congreso de matemática aplicada, Tarragona, 2003. Publicado en CD-ROM.
   
• 16) Método de Schur-Frechét para el cálculo de una aproximación de la exponencial de una matriz. (L. SOLER, E. DEFEZ, A. HERVÁS)
  Cuartas jornadas de investigación y fomento de la multidisciplinaridad del Departamento de Matemática Aplicada. Valencia, 2002. Publicada en las Actas de dicho congreso (S.P.U.P.V. 2002.2403) pág.: 309-318, 2002.
   
• 15) La estabilidad en los métodos multipaso. (E. DEFEZ, J. L. MORERA, G. RUBIO)
  XVII CEDYA/ VII congreso de matemática aplicada, Salamanca, 2001. Publicada en CD-ROM, ISBN: 84-699-6144-6, 2001.
   
• 14) Métodos constructivos de resolución de ecuaciones diferenciales. (J. ALBEIRO, J. CAMACHO, C. CASABÁN, J. CUENCA, E. DEFEZ, A. HERVÁS, L. JÓDAR, M. LEGUA, J.A. MARTIN ALUSTIZA, E. NAVARRO, J. PÉREZ, E. PONSODA, A. POSSO, D. ROSELLÓ)
  Primeras jornadas de investigación y fomento de la multidisciplinaridad del Departamento de Matemática Aplicada. Valencia, 1999.
   
• 13) Chebyshev matrix polynomials and second order matrix differential equations. (E. DEFEZ, L. JÓDAR)
  Fifth international symposium on orthogonal polynomials and special functions and their applications. Patras (Grecia), 1999.
   
• 12) Orthogonal matrix polynomials for progressive transmission of 3-D images. (E. DEFEZ, P. ALONSO-JORDÁ, A. LAW, A. HERVÁS, J. PEINADO, R.J. VILLANUEVA)
  Fifth international symposium on orthogonal polynomials and special functions and their applications. Patras (Grecia), 1999.
   
• 11) Hermite rational matrix approximation of Riccati differential equations. (E. DEFEZ, L. JÓDAR)
  Eighth International Coloquium on Differential Equations, Plovdiv (Bulgaria), 1997. Publicada en las Actas de dicho congreso pág.: 237-242, 1998.
   
• 10) Some applications of Hermite matrix polynomials series expansions. (E. DEFEZ, L. JÓDAR)
  Four international symposium on orthogonal polynomials and special functions and their applications, Sevilla, 1997. Publicada en J. Comp. and Applied Mathematics, Vol: 99, pág: 105-117, 1998.
   
• 9) Cálculo de la exponencial de una matriz con Mathematica mediante polinomios ortogonales matriciales de Hermite. (E. DEFEZ)
  II Congreso de Mathematica en España, Madrid, 1997. Publicada en Actas pág. 109-115 (1997) y en la revista TQ, Revista electrónica de cálculo simbólico y aplicaciones (http://csimbolico.rediris.es ) 2 (1998).
   
• 8) Cálculo de las funciones Beta y Gamma matriciales con Mathematica. (E. DEFEZ, M. BOIX, J.C.RODRIGUEZ ALCANTUD)
  II Congreso de Mathematica en España, Madrid, 1997. Publicada en Actas pág. 101-108 (1997) y en la revista TQ, Revista electrónica de cálculo simbólico y aplicaciones (http://csimbolico.rediris.es ) 2 (1998).
   
• 7) Un nuevo método para calcular la exponencial de una matriz con Mathematica. (E. DEFEZ, M. GIMENO, E. NAVARRO)
  I Congreso de Mathematica en España, Valencia, 1996. Publicada en Actas pág. 283-288 (1996) y en la revista TQ, Revista electrónica de cálculo simbólico y aplicaciones (http://csimbolico.rediris.es ) 1 (1998).
   
• 6) A matrix formula for the generating function of the product of Hermite matrix polynomials. (L. JÓDAR, E. DEFEZ)
  International workshop on orthogonal polynomials in mathematical physics. Madrid, 1996. Publicada en las Actas de dicho congreso pág. 93-101, 1996.
   
• 5) Soluciones explícitas para una clase de sistemas acoplados en diferencias no autónomos de segundo orden con condiciones iniciales. (E. DEFEZ, E. PONSODA)
  XIV C.E.D.Y.A / I V Congreso de matemática aplicada. Vic (España), 1995.
   
• 4) Key frame a tweening-simple polynomials computations. (E. DEFEZ, A. G. LAW, A. REZAZADEH, X.D. YANG)
  I.C.A.R.C.V-94 Third international conference on automatica, robotics and computer vision. Singapur, 1994. Publicada en las Actas de dicho congreso pág.: 122-181, 1994.
   
• 3) Orthogonal matrix polynomials on the real line: applications to matricial quadrature integrations. (L. JÓDAR, E. DEFEZ, E. PONSODA)
  Conference on orthogonality moment problems and continued fractions. Delft (Holanda), 1994.
   
• 2) Matrix quadrature integration and orthogonal matrix polynomials. (L. JÓDAR , E. DEFEZ, E. PONSODA)
  24 Manitoba Conference on Combinatorial Mathematics and Combinatorial Computing. Manitoba (Canadá) 1994. Publicada en Congressus Numerantium, Vol: 106, Pág.: 141-153 (1995).
   
• 1)Métodos lineales multipaso matriciales para Y''(t)=f(t, Y(t)). (J. L. MORERA, E. DEFEZ, J. C. CORTES, A. HERVÁS)
  XIII C.E.D.Y.A / III CONGRESO DE MATEMÁTICA APLICADA. Madrid, 13-15 Septiembre de 1993. Publicada en las Actas de dicho congreso pág. 438-443.