منابع مشابه
A new branch of the logical algebra: UP-algebras
In this paper, we introduce a new algebraic structure, called a UP-algebra (UP means the University of Phayao) and a concept of UP-ideals, UP-subalgebras, congruences and UP-homomorphisms in UP-algebras, and investigated some related properties of them. We also describe connections between UP-ideals, UP-subalgebras, congruences and UP-homomorphisms, and show that the notion of UP-algebras is a ...
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Given a strong deformation retract M of an algebra A, there are several apparently distinct ways ([9],[19], [13], [24],[15], [18], [17]) of constructing a coderivation on the tensor coalgebra of M in such a way that the resulting complex is quasi isomorphic to the classical (differential tor) [7] bar construction of A. We show that these methods are equivalent and are determined combinatorially...
متن کاملDerivations of UP-algebras by means of UP-endomorphisms
The notion of $f$-derivations of UP-algebras is introduced, some useful examples are discussed, and related properties are investigated. Moreover, we show that the fixed set and the kernel of $f$-derivations are UP-subalgebras of UP-algebras,and also give examples to show that the two sets are not UP-ideals of UP-algebras in general.
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Background: During last decades, many otologists attempted to make a long standing dry ear, resulting in better hearing after cholesteatoma surgery. This study evaluated the prognosis of two common methods of cholesteatoma ear surgery considering ten years follow-up. Methods: This retrospective analysis was done using medical records of 108 adult patients with cholesteatoma. After ten years of ...
متن کاملSurgery in Cholesteatoma: Ten years Follow-up
Dear Editor, I was greatly interested in the article "Surgery in cholesteatoma: Ten years Follow-up" by Dr. M. Ajalloueyan published in your journal in March 2006; Vol 31, No 1: 37-40.I think there are grave misconceptions and many doubts about this article. That article has some misleading data that should be clarified by the author. The descriptions of table 1, "Statistical characteristics of...
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ژورنال
عنوان ژورنال: Universal Journal of Mathematics and Applications
سال: 2018
ISSN: 2619-9653
DOI: 10.32323/ujma.417844