منابع مشابه
Monomorphisms of Coalgebras
In any concrete category C the natural problem of whether epimorphisms are surjective maps arise, as well as the dual problem of whether the monomorphisms are injective maps. This type of problems have already been studied before in several well known categories: for example in [6] it is shown that the property of epimorphisms of being surjective holds in the categories of von Neumann algebras,...
متن کاملMonomorphisms between Cayley-Dickson Algebras
In this paper we study the algebra monomorphisms from Am = R 2m into An = R 2n for 1 ≤ m ≤ n, where An are the Cayley-Dickson algebras. For n ≥ 4, we show that there are many types of monomorphisms and we describe them in terms of the zero divisors in An.
متن کاملOn Sets Represented by Partitions
We prove a lemma that is useful to get upper bounds for the number of partitions without a given subsum. From this we can deduce an improved upper bound for the number of sets represented by the (unrestricted or into unequal parts) partitions of an integer n.
متن کاملOn Strong Monomorphisms and Strong Epimorphisms
M. A. Al Shumrani Department of Mathematics, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia Correspondence should be addressed to M. A. Al Shumrani, [email protected] Received 10 March 2010; Accepted 5 May 2010 Academic Editor: Mihai Putinar Copyright q 2010 M. A. Al Shumrani. This is an open access article distributed under the Creative Commons Attribution License,...
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INTRODUCTION The purpose of this study is to analyze national and institutional trends in shoulder arthroplasty utilization by race. METHODS The Nationwide Inpatient Sample (NIS) was analyzed to determine racial trends in shoulder arthroplasty utilization nationally. An institutional database was then utilized to retrospectively identify all patients undergoing shoulder arthr...
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ژورنال
عنوان ژورنال: Journal of Pure and Applied Algebra
سال: 2007
ISSN: 0022-4049
DOI: 10.1016/j.jpaa.2005.12.009