On Upper and Lower Contra-Continuous Fuzzy Multifunctions

Authors

  • S. E. Abbas Department of Mathematics, Faculty of Science, Jazan University, Saudi Arabia.
  • M. A. Hebeshi Department of Mathematics, Faculty of Science, Sohag University, Egypt.
  • I. M. Taha Department of Mathematics, Faculty of Science, Sohag University, Egypt.

Keywords:

L-Fuzzy topology, fuzzy multifunction, fuzzy upper and fuzzy lower contracontinuous, contra semi-continuous, contra-irresolute, composition, union

Abstract

This paper is devoted to the concepts of fuzzy upper and fuzzy lower contra-continuous, contra-irresolute and contra semi-continuous multifunctions. Several characterizations and properties of these multifunctions along with their mutual relationships are established in L-fuzzy topological spaces. Later, composition and union between these multifunctions have been studied.

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Published

2015-06-30

Issue

Vol. 47 No. 1 (2015)

Section

Articles

How to Cite

On Upper and Lower Contra-Continuous Fuzzy Multifunctions. (2015). Punjab University Journal of Mathematics, 47(1), 102-114. https://pujm.pu.edu.pk/index.php/pujm/article/view/42