Información del autor
Autor Díaz Díaz, Jesús Ildefonso |
Documentos disponibles escritos por este autor (214)
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This paper deals with the homogenization of a nonlinear problem modelllng chemical reactive flows through periodically perforated domains. The chemical reactions take place on the walls of the porous médium. The effective behavior of these react[...]![]()
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Casal, Alfonso C. ; Díaz Díaz, Jesús Ildefonso ; Stich, Michael ; Vegas Montaner, José Manuel | Springer | 2011We consider the complex Ginzburg-Landau equation with feedback control given by some delayed linear terms (possibly dependent of the past spatial average of the solution). We prove several bifurcation results by using the delay as parameter. We [...]![]()
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In this paper, we study the number of steady solutions of a non-linear model arising in Climatology. By applying a shooting method we show the existence of infinitely many steady solutions for some values of a parameter (the solar constant). Thi[...]![]()
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Mathematics plays a fundamental role in all scientific fields and, of course, in the Geosciences. This has been specially well known since, for example, the beginning of geodesy in the Greek era (VANÍC EK and KRAKIWSKY 1992) or in the pioneering[...]![]()
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We are concerned with the parabolic obstacle problem ut+Au+cu?f,u??, (ut+Au+cu?f)(u??)=0inQ=(0,T)×?, u=? on ?=(0,T)×??, u|t=0=u0 in ?, A being a linear elliptic second-order operator in divergence form or a nonlinear `pseudo-Laplacian'. We give [...]![]()
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In this paper, we are concerned with the parabolic obstacle problem (u(t)=partial derivative u/partial derivative t [GRAPHICS] (A is a linear second order elliptic operator in divergence form or a nonlinear "pseudo-Laplacian"). We give an isoper[...]![]()
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We study the dynamics and regularity of level sets in solutions of the semilinear parabolic equation u(t) - Delta u is an element of aH(u - mu) in Q = Omega X (0, T], where Omega subset of R(n) is a ring-shaped domain, a and mu are given positiv[...]![]()
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We study the dynamics and regularity of the level sets in solutions of the semilinear parabolic equation u(t) - Delta p(u) + f is an element of aH(u - mu) in Q = Omega x (0, T], P is an element of (1, infinity), where Omega subset of R(n) is a r[...]![]()
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Díaz Díaz, Jesús Ildefonso ; Lazzo, Mónica ; Schmidt, Paul G. | Department of Mathematics. Texas State University | 2007This paper concerns the equation ?mu = |u| p, where m ? N, p ? (1, ?), and ? denotes the Laplace operator in RN, for some N ? N. Specifically, we are interested in the structure of the set L of all large radial solutions on the open unit ball B [...]![]()
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Díaz Díaz, Jesús Ildefonso ; Lazzo, M. ; Schmidt, Paul G. | Society for Industrial and Applied Mathematics | 2005This paper is concerned with the elliptic system (0.1) Delta upsilon=phi, Delta phi=vertical bar del upsilon vertical bar(2) posed in a bounded domain Omega subset of R-N, N is an element of N. Specifically, we are interested in the existence an[...]