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A general existence principle for strong solutions to the dirichlet problem for the equation δ u + f(t, u) = 0
(Elsevier BV, 1997-05-01)
An existence principle is established for Delta u + f(t, u) = 0 on Omega, u = 0 on partial derivative Omega. Our theory relies on a fixed point result for weakly sequentially continuous and weakly compact maps.
Fuzzy multivalued variational inclusions in banach spaces
(Springer Nature, 2006-01-01)
Dynamic equations on time scales: a survey
(Elsevier BV, 2002-04-01)
Oscillation of functional differential equations
(Elsevier BV, 2005-02-01)
Some new criteria for the oscillation of functional differential equations of the form,
d/dt[1/a(n-1)(t) d/dt q (t) f (x [g (t)]) = 0, dt a._1 (t) Tt -a,,-2 (t) Tt -al(t) dt
are presented in this paper. @ 2005 Elsevier ...
Nonresonant nonlinear singular problems in the limit circle case
(Elsevier BV, 1996-02-01)
Integral inclusions of upper semi-continuous or lower semi-continuous type
(American Mathematical Society (AMS), 1996-08-01)
Topological results for set valued maps are used to establish existence results for integral inclusions of Volterra or Hammerstein type.
A note on equilibria for abstract economies
(Elsevier BV, 2001-08-01)
Second-order boundary value problems of singular type
(Elsevier BV, 1998-10-01)
Fixed point theory for self maps between fréchet spaces
(Elsevier BV, 2001-04-01)