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Paper's Title:
Oscillations of First Order Linear Delay Difference Equations
Author(s):
G. E. Chatzarakis and I. P. Stavroulakis
Department of Mathematics, University of Ioannina,
451 10, Greece
ipstav@cc.uoi.gr
Abstract:
Consider the first order linear delay difference equation of
the form where
is
a sequence of nonnegative real numbers, k is a positive integer and denotes
the forward difference operator New
oscillation criteria are established when the well-known oscillation conditions
and
are
not satisfied. The results obtained essentially improve known results in the
literature.
Paper's Title:
Multivalued Hemiequilibrium Problems
Author(s):
Muhammad Aslam Noor
Mathematics Department,
COMSATS Institute of Information Technology,
Sector H-8/1, Islamabad,
Pakistan.
noormaslam@hotmail.com
Abstract:
In this paper, we introduce and study a new class of equilibrium problems, known
as multivalued hemiequilibrium problems. The auxiliary principle technique is used to suggest
and analyze some new classes of iterative algorithms for solving multivalued hemiequilibrium
problems. The convergence of the proposed methods either requires partially relaxed strongly
monotonicity or pseudomonotonicity. As special cases, we obtain a number of known and new
results for solving various classes of equilibrium and variational inequality problems. Since
multivalued hemiequilibrium problems include hemiequilibrium, hemivariational inequalities,
variational inequalities and complementarity problems as specials cases, our results still hold for
these problems.
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