• The Pure and Applied Mathematics
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• v.15 no.1
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• pp.93-101
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• 2008

In this article we shall characterize the Heinz-Kato-Furuta inequality in several ways, and the best bound for sharpening of the inequality is obtained by the method in [7].

• Korean Journal of Mathematics
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• v.9 no.2
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• pp.149-156
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• 2001

We characterize some properties of $t$-fuzzy groups and $t$-fuzzy invariant groups and represent every subgroup S of a group X using the level set of $t$-fuzzy group constructed from S.

• Korean Journal of Mathematics
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• v.9 no.2
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• pp.83-98
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• 2001

We characterize ($r,w$)-nuclear operators acting from a Banach space whose dual has weak type $q$ into a Banach space of weak type $p$ by the asymptotic behaviour of their entropy numbers.

• Honam Mathematical Journal
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• v.27 no.2
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• pp.183-194
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• 2005

A permutation graph is the graph of inversions in a permutation. Here we determine whether a given labelled graph is a permutation graph or not and when a graph is a permutation graph we find the associated permutation. We also characterize all the 2-regular permutation graphs.

• Journal of the Chungcheong Mathematical Society
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• v.20 no.4
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• pp.485-493
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• 2007

The purpose of this paper is to introduce and investigate the weakly large subsystem of S-system $M_S$. In this study, we consider injective algebraic system and large subsystem. We also characterize weakly nonsingular congruence on S-system.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 1995.05a
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• pp.163-166
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• 1995

A solar cell I-V (current-voltage) characteristic measurement facility is crucial, for the characteristic of solar cells, The solar cell I-v tester has been designed and fabricated to characterize the solar cell at SAIT.

• Communications of the Korean Mathematical Society
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• v.21 no.3
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• pp.465-474
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• 2006

In this paper, we characterize the boundedness and compactness of weighted composition operators ${\psi}C_{\varphi}f={\psi}fo{\psi}$ acting between Bergman-type spaces.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2002.05a
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• pp.277-280
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• 2002

In this paper, we characterize the Borel $\sigma$-field generated by the Hausdorff-Skorokhod metric on the space of normal and upper-semicontinuous fuzzy sets with compact support in the Ecleadean space R$\^$n/. As a result. we give a characterization of measurable fuzzy mappings .

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.7 no.4
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• pp.262-266
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• 2007

We characterize a fuzzy pairwise $\gamma$-irresolute continuous mapping on a fuzzy bitopological space.

• Communications of the Korean Mathematical Society
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• v.18 no.3
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• pp.533-540
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• 2003

We introduce the notion of semi-convergence of p-stacks and by using that notion we characterize the semi-interior, semiclosure, separation axioms and semi-continuity on a topological space. Also we introduce a new notion of p-somicompactness and investigate its properties in terms of semi-convergence of p-stacks.