[PDF] Top 20 El resurgimiento actual del debate sobre los modelos comparados de capitalismo

... the gradient of u, there are many existence results because our equation has the variational structure ...f including ∇u, we can refer to [, ] and [] for the existence of a positive ... See full document

... 0 < ξ ≤ z(r) ≤ 2ξ ≤ η ≤ y(r) ≤ 2η. (3.50) On the other hand, if the problem (3.9) has a solution y(r), then v(x) = y( | x | ) = y(r) is a solution of (3.7). Similarly, if the initial value problem (3.45) ... See full document

... or elliptic equations which are nonlinear with respect to gradient of the thought solution and with variable exponents of nonlinearity; see [– ] and references ...and ... See full document

... [7] J. I. D´ıaz and J. E. Sa´a, “Existence et unicit´e de solutions positives pour certaines ´equations el- liptiques quasilin´eaires. [Existence and uniqueness of positive solutions of some ... See full document

... evolution equations case 1.1, the existence and a partial uniqueness of renormalized solutions have been proved in Blanchard et ...nonlinear elliptic and parabolic equations when the diffusion ... See full document

... entire positive solutions of Eq. (1.1). Later, the existence and asymptotic behavior of entire large solutions was first described by Ni in ...the existence and uniqueness ... See full document

... If we assume ψ satisfies suitable conditions, then there exists a unique continuous adapted solution of (.) with λ large enough, denoted by (X(·, x), Y(·, x), Z(·, x)) in H × R × . We define a deterministic ... See full document

... exists λ ∗ >  such that (.) has at least two nontrivial positive solutions for every λ ∈ (, λ ∗ ). Remark . We should mention that the above p-Laplacian problems studied in [, – ] are all not (p – ... See full document

... the existence of the equilibrium solutions is established for the Volterra-Lotka mutualistic symbiosis model in the case of equal linear birth rates, using the method of upper and lower ... See full document

... and f (x, t) ≥ Ct q– for  < t < δ, q < p – , the problem (.) had a sequence of solutions by genus theory. The second result is that when f (x, t) satisfies  < αF(x, t) ≤ tf (x, t), ∀x ∈ , t = , α > p ... See full document

... This paper is devoted to the construction and analysis of the fourth order exponentially fitted discretization of a second order quasilinear elliptic PDE using full step grid points on a uniform mesh with ... See full document

... nonlocal elliptic system of (p,q)-Kirchhoff type on a bounded domain based on the three critical points theorem introduced by ...the existence of three weak solutions under appropriate hypotheses; then, we ... See full document

... Proof. By way of contradiction,we can obtain the first statement from Theorem 4.1. Since p  q satisfies (10) and the remark noted just before Theorem 3.2 shows that (15) admits a solution with b = p  q . Thus ... See full document

... 5. Drábek, P, Robinson, SB: Resonance problems for the p-Laplacian. J. Funct. Anal. 169(1), 189-200 (1999) 6. Tang, C-L: Solvability for two-point boundary value problems. J. Math. Anal. Appl. 216(1), 368-374 (1997) 7. ... See full document

... Using variational methods, we prove the existence and nonexistence of positive solutions for a class of ( p , q )-Laplacian systems with a parameter.. Copyright © 2007 S.[r] ... See full document

... the existence and nonexistence of singular p-La- placian elliptic system ...relevant existence and nonexistence results for a class of semi- linear elliptic system with gradient term in ... See full document

... variational structure. Up to now, the tools to study (.) are a fixed point result with Leray- Schauder condition and the Schaefer fixed point theorem. Very recently, Alves and Covei [] established the sub-supersolution ... See full document

... The second purpose is to give a result for nonexistence of solution. To the best of our knowledge, there has been very less result for nonexistence of solution about singular elliptic equation. We ... See full document

... De Cave, LM, Sbordone, C: Gradient regularity for solutions to quasilinear elliptic equations in the plane.. Zecca, G: Regularity results for planar quasilinear equations.[r] ... See full document

... In this paper we also discuss the non-existence of the positive solution of (.) and (.). However, our method is different from all of the above work. Instead of the Pohozaev identities, we ... See full document