Israel Journal of Mathematics

, Volume 90, Issue 1–3, pp 423–428 | Cite as

Orthogonal sums of semigroups

  • Stojan Bogdanović
  • Miroslav Ćirić


The purpose of this paper is to prove that every semigroup with the zero is an orthogonal sum of orthogonal indecomposable semigroups. We prove that the set of all 0-consistent ideals of an arbitrary semigroup with the zero forms a complete atomic Boolean algebra whose atoms are summands in the greatest orthogonal decomposition of this semigroup.


Boolean Algebra Inverse Semigroup Regular Semigroup Complete Boolean Algebra Arbitrary Semigroup 
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Copyright information

© Hebrew University 1995

Authors and Affiliations

  • Stojan Bogdanović
    • 1
  • Miroslav Ćirić
    • 1
  1. 1.Faculty of EconomicsUniversity of NišNišYugoslavia

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