tchebycheff system
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2021 ◽  
Vol 1943 (1) ◽  
pp. 012144
Author(s):  
T Widiharih ◽  
Mustafid ◽  
Sudarno ◽  
A Prahutama


1999 ◽  
Vol 13 (3) ◽  
pp. 275-291 ◽  
Author(s):  
Michel Denuit ◽  
Claude Lefèvre ◽  
Sergey Utev

In this paper, a new concept called generalized stochastic convexity is introduced as an extension of the classic notion of stochastic convexity. It relies on the well-known concept of generalized convex functions and corresponds to a stochastic convexity with respect to some Tchebycheff system of functions. A special case discussed in detail is the notion of stochastic s-convexity (s ∈ [real number symbol]), which is obtained when this system is the family of power functions {x0, x1,..., xs−1}. The analysis is made, first for totally positive families of distributions and then for families that do not enjoy that property. Further, integral stochastic orderings, said of Tchebycheff-type, are introduced that are induced by cones of generalized convex functions. For s-convex functions, they reduce to the s-convex stochastic orderings studied recently. These orderings are then used for comparing mixtures and compound sums, with some illustrations in epidemic theory and actuarial sciences.



1995 ◽  
Vol 81 (2) ◽  
pp. 274-295 ◽  
Author(s):  
J.M. Carnicer ◽  
J.M. Pena




1984 ◽  
Vol 102 (2) ◽  
pp. 385-392 ◽  
Author(s):  
Josip E Pečarić
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