Minkowski difference and Sallee elements in an ordered semigroup

• Autorzy: Danuta Borowska , Jerzy Grzybowski
• Języki publikacji: EN

Abstrakty

EN

In the manner of Pallaschke and Urbański ([5], chapter 3) we generalize the notions of the Minkowski difference and Sallee sets to a semigroup. Sallee set (see [7], definition of the family \(S\) on p. 2) is a compact convex subset \(A\) of a topological vector space \(X\) such that for all subsets \(B\) the Minkowski difference \(A -B\) of the sets \(A\) and \(B\) is a summand of \(A\). The family of Sallee sets characterizes the Minkowski subtraction, which is important to the arithmetic of compact convex sets (see [5]). Sallee polytopes are related to monotypic polytopes (see [4]). We generalize properties of Minkowski difference and Sallee sets to semigroup and investigate the families of Sallee elements in several specific semigroups.

Słowa kluczowe

EN

Minkowski difference; Sallee elements; semigroups

• Wydawca: Polish Mathematical Society
• Czasopismo: Commentationes Mathematicae
• Rocznik: 2007
• Tom: 47
• Numer: 1

Daty

wydano

2007

online

2017-12-19

Twórcy

autor

Danuta Borowska

autor

Jerzy Grzybowski

Identyfikatory

DOI

10.14708/cm.v47i1.5239