Upper and lower solutions for problems with singular sign changing nonlinearities and with nonlinear boundary data

Donal O'Regan

DOI: http://dx.doi.org/10.12775/TMNA.2002.019

Abstract


An upper and lower solution approach is presented for singular
boundary value problems. In particular
our nonlinearity may be singular in its dependent variable and is allowed to
change sign.

Keywords


Upper and lower solutions; singular boundary value problems

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