Heading: 
UDC: 
519.65, 517.17, 512.56
Language: 
English

On Idempotent Elements of Semigroup of Increasing Monotonous Mappings

Abstract: 

In some special classes of ordered topological spaces we characterize roundings as extreme points of set of non increasing isotonic mappings, and establish their stability in Hyers –Ulam sense.

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