J. Korean Math. Soc. 2012; 49(1): 153-164
Printed January 1, 2012
https://doi.org/10.4134/JKMS.2012.49.1.153
Copyright © The Korean Mathematical Society.
Fanglei Wang and Yukun An
Hohai University, Nanjing University of Aeronautics and Astronautics
In this paper, we study the existence, non-existence, and multiplicity of positive solutions for a coupled telegraph system using the fixed-point theorem of cone expansion/compression type, the upper-lower solutions method, and fixed point index theory.
Keywords: telegraph system, doubly periodic solution, upper and lower solutions, fixed point theorem, cone
MSC numbers: 35B09, 35G60
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