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TOPOLOGICAL METHODS

IN

NONLINEAR ANALYSIS



Vol. 12, No. 2           December 1998



TABLE OF CONTENTS

Title and Author(s) Page
item In memoriam Jean Leray (1906-1998)
J. Mawhin		 199
item Multiplicity for symmetric indefinite functionals: applications to Hamiltonian and elliptic systems
P. Felmer and Z.-Q. Wang		 207
item Type (II) Regions Between Curves of the Fucik Spectrum and Critical Groups
K. Perera and M. Schechter		 227
item On Schrodinger Equation with Periodic Potential and Critical Sobolev Exponent
J. Chabrowski and Jianfu Yang		 245
item Uniqueness of periodic solutions for asymptotically linear Duffing equations with strong forcing
G. Katriel		 263
item On the existence of homoclinic orbits for the asymptotically periodic Duffing equation
F. Alessio, P. Caldiroli and P. Montecchiari		 275
item Multiple periodic solutions for problems at resonance with arbitrary eigenvalues
P. Habets, E. Sierra and M. Torallo		 293
item The Intrinsic Mountain Pass Principle
N. K. Ribarska, Ts. Y. Tsachev and M. I. Krastanov		 309
item Morse Complex, Even Functionals and Asymptotically Linear Differential Equations with Resonance at Ifinity
Z. Balanov and E. Schwartzman		 323
item Properties of Minimal Invariant Sets for Nonexpansive Mappings
K. Goebel		 367
item The Coincidence Reidemeister Classes of Maps on Nilmanifolds
D. L. Goncalves		 375



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