Semi-homogeneous maps

Wenfong Ke, Hubert Kiechle, Günter Pilz, Gerhard Wendt

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

A map f from a vector space V into its underlying field F is called semi-homogeneous if f(kv)=kf(v) holds for all k in Im(f) and v in V. This means that we have f(f(w)v)=f(w)f(v) for all v,w in V. If we define the operation * on V via w*v:=f(w)v, this equation makes (V,+,*) into a planar nearring. So we have an (almost) 1-1-correspondence between semi-homogeneous maps and planar nearrings on a vector space V. This enables a complete characterization of semi-homogeneous maps. One can even generalize this to the much more general case of actions of groups on sets.
Original languageEnglish
Title of host publicationA Panorama of Mathematics: Pure and Applied
Place of PublicationProvidence, RI, USA
PublisherAmerican Mathematical Society
Pages187-196
Number of pages9
Volume658
ISBN (Print)978-1-4704-2902-7
DOIs
Publication statusPublished - 2016

Publication series

NameContemporary Mathematics
ISSN (Print)0271-4132

Fields of science

  • 101 Mathematics
  • 101001 Algebra
  • 101005 Computer algebra
  • 101013 Mathematical logic
  • 102031 Theoretical computer science

JKU Focus areas

  • Computation in Informatics and Mathematics
  • Engineering and Natural Sciences (in general)

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