Geodesic
Semiring joins of a ring and semifield
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (2008), pp. 76-80.

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We describe the structure of semirings which are unions of a ring and a semifield.
Keywords: ring, semiring, division semiring, semiring disjoint union. 
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M. A. Lukin. Semiring joins of a ring and semifield. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (2008), pp. 76-80. http://geodesic.mathdoc.fr/item/IVM_2008_12_a9/

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