منابع مشابه
On a Generalized Dhombres Functional Equation Ii
We consider the functional equation f(xf(x)) = φ(f(x)) where φ : J → J is a given increasing homeomorphism of an open interval J ⊂ (0,∞) and f : (0,∞) → J is an unknown continuous function. In a previous paper we proved that no continuous solution can cross the line y = p where p is a fixed point of φ, with a possible exception for p = 1. The range of any non-constant continuous solution is an ...
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In this paper we study the rank equation rank [ A B C X ] = rank(A) and find the necessary and sufficient conditions when X = A and X = A are the solutions of that equation. In both cases we give a explicit form of matrices B and C. Department of Mathematics, Faculty of Sciences and Mathematics, University of Nǐs P.O. Box 224, Vǐsegradska 33, 18000 Nǐs, Serbia E-mail : [email protected] gaga...
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ژورنال
عنوان ژورنال: Glasgow Mathematical Journal
سال: 2005
ISSN: 0017-0895,1469-509X
DOI: 10.1017/s0017089505002429