 
Summary: J. Math. Anal. Appl. 375 (2011) 388400
Contents lists available at ScienceDirect
Journal of Mathematical Analysis and
Applications
www.elsevier.com/locate/jmaa
A sum operator equation and applications to nonlinear elastic beam
equations and LaneEmdenFowler equations
Chengbo Zhai a,,1
, Douglas R. Anderson b
a
School of Mathematical Sciences, Shanxi University, Taiyuan 030006, Shanxi, PR China
b
Department of Mathematics and Computer Science, Concordia College, Moorhead, MN 56562, USA
a r t i c l e i n f o a b s t r a c t
Article history:
Received 28 May 2010
Available online 16 September 2010
Submitted by Goong Chen
Keywords:
Positive solution
