I PRIKLADNAYA MATEMATIKA
(FUNDAMENTAL AND APPLIED MATHEMATICS)
1999, VOLUME 5, NUMBER 4, PAGES 1245-1250
I. I. Artamonova
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The paper suggests a proof of the fact that every semiring with orthogonal family of idempotents is a UA-semiring. The problem of uniqueness of addition in the class of incidence semialgebras is solved.
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Last modified: December 9, 1999