Necessary conditions for a semigroup ring to be an integral CRM-ring with identity

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Title: Necessary conditions for a semigroup ring to be an integral CRM-ring with identity
Author: Engel, Alejandro
Abstract: The immersion of semigroup rings into division rings gave rise to Tamari's [6] hierarchical classification of semigroups. Some basic properties of this classification were given elsewhere ([1] , [2] and [3]), pointing out ([1], Remark 1) that Tamari's condition ([1], Theorem 1) is only a sufficient one. The present note continues Subbiah's [5] investigation of the necessity of Tamari's condition.
Record URI: http://hdl.handle.net/1850/4749
Publishers URL: http://dx.doi.org/10.1007/BF02195926
Date: 1976-12

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