Viña del Mar-Valparaiso, Chile, on January 10 - 15, 2000.

The following papers were submitted by the participants in the conference, then refereed and accepted for publication in a special issue of the Electronic Journal of Differential Equations. Details about the conference can be found in the Foreword Message by the editors of this proceedings: Raul Manasevich & Paul Rabinowitz.
**Table of contents.** (In alphabetical order)

- A. Abbondandolo, P. Felmer, & J. Molina,
*An estimate on the relative Morse index for strongly indefinite functionals*, pp. 1-11. - Pablo Amster,
*Nonlinearities in a second order ODE*, pp. 13-21. - Rafael D. Benguria & M. Cristina Depassier,
*Bounds for nonlinear eigenvalue problems*, pp. 23-27. - Marie-Françoise Bidaut-Véron,
*Behaviour near zero and near infinity of solutions to elliptic equalities and inequalities*, pp. 29-44. - Jerome Busca,
*First moments of energy and convergence to equilibrium*, pp. 45-53. - A. Cañada & A. J. Ureña,
*Asymptotic behaviour of the solvability set for pendulum-type equations with linear damping and homogeneous Dirichlet conditions*, pp. 55-64. - Anna Capietto & Marielle Cherpion,
*On the existence of infinitely many solutions to a damped sublinear boundary-value problem*, pp. 65-87. - Florin Catrina & Zhi-Qiang Wang,
*A one-dimensional nonlinear degenerate elliptic equation*, pp. 89-99. - Sui Sun Cheng, Jian-She Ju, & Bin Liu,
*An abstract existence result and its applications*, pp. 101-107. - Carlos Conca, Axel Osses, & Jeannine Saint Jean Paulin,
*A semilinear control problem involving homogenization*, pp. 109-122. - Michael G. Crandall & L. C. Evans,
*A remark on infinity harmonic functions*, pp. 123-129. - Pablo De Napoli & Maria Cristina Mariani,
*Three solutions for quasilinear equations in R*, pp. 131-140.^{n}near resonance - Julian Fernandez Bonder, Juan Pablo Pinasco, & Julio D. Rossi,
*Infinitely many solutions for an elliptic system with nonlinear boundary conditions*, pp. 141-154. - Marcelo F. Furtado & Elves A. B. Silva,
*Double resonant problems which are locally non-quadratic at infinity*, pp. 155-171. - Marta Garcia-Huidobro,
*Behavior of positive radial solutions of a quasilinear equation with a weighted Laplacian*, pp. 173-187. - Ansgar Jungel, Peter A. Markowich, & Giuseppe Toscani,
*Decay rates for solutions of degenerate parabolic systems*, pp. 189-202. - Claudia Lederman, Juan Luis Vazquez, & Noemi Wolanski,
*A mixed semilinear parabolic problem from combustion theory*, pp. 203-214. - Yanyan Li & Zhi-Qiang Wang,
*Gluing approximate solutions of minimum type on the Nehari manifold*, pp. 215-223. - Raul Naulin,
*Exponential dichotomies for linear systems with impulsive effects*, pp. 225-241. - M. Ramos & P. Rodrigues,
*On a fourth order superlinear elliptic problem*, pp. 243-255. - L. Sanchez,
*Heteroclinic connections for a class of non-autonomous systems*, pp. 257--266. - Elves A. B. Silva,
*Nontrivial solutions for noncooperative elliptic systems at resonance*, pp. 267-283. - Guido Sweers,
*When is the first eigenfunction for the clamped plate equation of fixed sign?*, pp. 285-296. - William C. Troy,
*On the Opial-Olech-Beesack inequalities*, pp. 297-301. - Gunther Uhlmann,
*Recent progress in the anisotropic electrical impedance problem*, pp. 303-311. - Laurent Véron,
*Generalized boundary value problems for nonlinear elliptic equations*, pp. 313-342. - Jianfu Yang,
*Nontrivial solutions of semilinear elliptic systems in R*, pp. 343-357.^{N} - Cecilia S. Yarur,
*Existence of non-negative solutions for a Dirichlet problem*, pp. 359-367.

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Note: Bibliographical references to articles in this
proceedings should be written as follows.

Author's name, *Title of the article*,
USA-Chile Workshop on Nonlinear Analysis,
Electron. J. Diff. Eqns.,
Conf. 06 (2001), pp. ##-##.

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