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Vol.13 No.3

Hur Kul ; Jang Su-Youn ; Lee Keon-Chang pp.167-187
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Abstract

We introduce the concepts of intuitionistic fuzzy submodules and intuitionistic fuzzy weak congruences on an R-module (Near-ring module). And we obtain the correspondence between intuitionistic fuzzy weak congruences and intuitionistic fuzzy submodules of an R-module. Also, we define intuitionistic fuzzy quotient R-module of an R-module over an intuitionistic fuzzy submodule and obtain the correspondence between intuitionistic fuzzy weak congruences on an R-module and intuitionistic fuzzy weak congruences on intuitionistic fuzzy quotient R-module over an intuitionistic fuzzy submodule of an R-module.

Kaya K. ; Guven E. ; Soyturk M. pp.189-195
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Abstract

Let R be a prime ring with characteristics not 2 and <TEX>${\sigma},\;{\tau},\;{\alpha},\;{\beta}$</TEX> be auto-morphisms of R. Suppose that <TEX>$d_1$</TEX> is a (<TEX>${\sigma},\;{\tau}$</TEX>)-derivation and <TEX>$d_2$</TEX> is a (<TEX>${\alpha},\;{\beta}$</TEX>)-derivation on R such that <TEX>$d_{2}{\alpha}\;=\;{\alpha}d_2,\;d_2{\beta}\;=\;{\beta}d_2$</TEX>. In this note it is shown that; (1) If <TEX>$d_1d_2$</TEX>(R) = 0 then <TEX>$d_1$</TEX> = 0 or <TEX>$d_2$</TEX> = 0. (2) If [<TEX>$d_1(R),d_2(R)$</TEX>] = 0 then R is commutative. (3) If(<TEX>$d_1(R),d_2(R)$</TEX>) = 0 then R is commutative. (4) If <TEX>$[d_1(R),d_2(R)]_{\sigma,\tau}$</TEX> = 0 then R is commutative.

Lee Byung-Soo pp.197-206
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Abstract

This paper introduces a class of multivalued mixed quasi-variational-like ineqcalities and shows the existence of solutions to the class of quasi-variational-like inequalities in reflexive Banach spaces.

Argyros Ioannis K. pp.207-215
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Abstract

Using more precise majorizing sequences than before [6], [10], [11], [14] we provide a finer semilocal convergence analysis for a certain class of Euler-Halley type methods for approximating a solution of an equation in a Banach space setting.

Song Kyung-Woo pp.217-225
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Abstract

We consider the nonrelativistic limit for the radial solutions to the self-dual equations in the self-dual Abelian Chern-Simons model. We achieve the limit by fixing the common maximum value of solutions.

Cho Y.J. ; Khan M. Firdosh ; Salahuddin Salahuddin pp.227-236
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Abstract

The purpose of this paper is to establish a random fixed point theorem for nonconvex valued random multivalued operators, which generalize known results in the literature. We also derive a random coincidence fixed point theorem in the noncompart setting.

Chang Ick-Soon ; Kim Hark-Mahn pp.237-247
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Abstract

In this paper we solve the Hyers-Ulam stability problem for quadratic functional equations on restricted domains, and then obtain an asymptotic behavior of quadratic mappings on restricted domains.

Journal of the Korean Society of Mathematical Education Series B: The Pure and Applied Mathematics