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• 13:58, 5 July 2023 Admin talk contribs deleted page Semiring (content was: "{{Short description|Algebraic ring that need not have additive negative elements}} {{Ring theory sidebar}} In abstract algebra, a '''semiring''' is an algebraic structure similar to a ring, but without the requirement that each element must have an additive inverse. The term '''rig''' is also used occasionally<ref>Głazek (2002) p.7</ref>—this originated as a joke, suggesting that rigs are ri''n''gs without ''n''egative elements, similar to usi...")