Geodesic
The property of universality for some monoid algebras over non-commutative rings
Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 2 (2006), pp. 102-105

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We define on an arbitrary ring $A$ a family of mappings $(\sigma_{x,y})$ subscripted with elements of a multiplicative monoid $G$. The assigned properties allow to call these mappings derivations of the ring $A$. A monoid algebra of $G$ over $A$ is constructed explicitly, and the universality property of it is shown. 
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     author = {Elena P. Cojuhari},
     title = {The property of universality for some monoid algebras over non-commutative rings},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {102--105},
     publisher = {mathdoc},
     number = {2},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2006_2_a11/}
}
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Elena P. Cojuhari. The property of universality for some monoid algebras over non-commutative rings. Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 2 (2006), pp. 102-105. http://geodesic.mathdoc.fr/item/BASM_2006_2_a11/