We study the existence of positive solutions to the boundary-value problem
where and . We show the existence of at least one positive solution if f is either superlinear or sublinear by applying the fixed point theorem in cones.
Submitted June 9, 1999. Published September 15, 1999.
Math Subject Classifications: 34B15
Key Words: Second-order multi-point BVP, positive solution, cone, fixed point.
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| Ruyun Ma
Department of Mathematics
Northwest Normal University
Lanzhou 730070, Gansu, P. R. China
e-mail address: email@example.com
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