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Now showing items 41-50 of 126
Existence criteria for singular boundary value problems with sign changing nonlinearities
(Elsevier BV, 2002-08-01)
Boundary value problems of nonsingular type on the semi-infinite interval
(Mathematical Institute, Tohoku University, 1999-01-01)
Existence of a positive solution is established for second order boundary value problems on the semi-infinite interval.
Nonlinear superlinear singular and nonsingular second order boundary value problems
(Elsevier BV, 1998-02-01)
Singular problems modelling phenomena in the theory of pseudoplastic fluids
(Cambridge University Press (CUP), 2003-10-01)
Existence criteria are presented for nonlinear singular initial and boundary value problems. In particular our theory includes a problem arising in the theory of pseudoplastic fluids.
Fixed point theory for generalized contractions on spaces with two metrics
(Elsevier BV, 2000-08-01)
Fixed point theory for k–car sets
(Elsevier BV, 2000-11-01)
Multiplicity of positive periodic solutions to second order differential equations
(Cambridge University Press (CUP), 2006-04-01)
In this paper, we study the existence of positive periodic solutions to the equation x" = f (t, x). It is proved that such a equation has more than one positive periodic solution when the nonlinearity changes sign. ...
Construction of upper and lower solutions for singular discrete initial and boundary value problems via inequality theory
(Springer Nature, 2005-01-01)
We present new existence results for singular discrete initial and boundary value problems. In particular our nonlinearity may be singular in its dependent variable and is allowed to change sign.
Twin positive periodic solutions of second order singular differential systems
(Uniwersytet Mikolaja Kopernika/Nicolaus Copernicus University, 2005-06-01)
In this paper, we study positive periodic solutions to singular second order differential systems. It is proved that such a problem has at least two positive periodic solutions. The proof relies on a nonlinear alternative ...