University of Sistan and Baluchestan
P.O. Box 89155-987, Zahedan, IRAN
Abstract. Unlike real numbers which are simply ordered, the problem of ordering interval numbers is a challenging problem. Several methods have been proposed to compare intervals. In this paper, we propose two new methods to compare two interval numbers. The relations ≤k and ≤_F on the space of all interval numbers are proposed.
AMS Subject classification: 65G30
Keywords and phrases: comparing intervals, interval numbers, partial order
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