Document Type : Research Paper


1 Department of mathematics, Islamic Azad University,Firuozkooh Branch,Firuozkooh,Iran

2 Department of mathematics, Islamic Azad University,Kermanshah Branch,kermanshah,Iran


In this paper, we investigate the existence of a positive solution of fully fuzzy linear equation systems. This paper mainly to discuss a new decomposition of a nonsingular fuzzy matrix, the symmetric times triangular (ST) decomposition. By this decomposition, every nonsingular fuzzy matrix can be represented as a product of a fuzzy symmetric matrix S and a fuzzy triangular matrix T.


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