Volume 13, Issue 2 (12-2014)                   JIRSS 2014, 13(2): 177-186 | Back to browse issues page

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Khaledi B. Karlin’s Basic Composition Theorems and Stochastic Orderings. JIRSS 2014; 13 (2) :177-186
URL: http://jirss.irstat.ir/article-1-293-en.html
, bkhaledi@hotmail.com
Abstract:   (6106 Views)
Suppose λ,x,ζ traverse the ordered sets Λ, X and Z, respectively and consider the functions f(λ,x,ζ) and g(λ,ζ) satisfying the following conditions, (a) f(λ,x,ζ) > 0 and f is TP2 in each pairs of variables when the third variable is held fixed and (b) g(λ,ζ) is TP2. Then the function h(λ,x) =∫Z f(λ,x,ζ)g(λ,ζ)dµ(ζ), defined on Λ×X is TP2 in (λ,x). The aim of this note is to use a new stochastic ordering argument to prove the above result and simplify it’s proof given by Karlin (1968). We also prove some other new versions of this result.
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Received: 2014/12/16 | Accepted: 2014/12/16 | Published: 2014/12/16

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