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- 저자 : Paykan, Kamal (검색결과 3 건)
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Cleanness of skew generalized power series rings
Kamal Paykan 대한수학회 2020 대한수학회보 Vol.57 No.6
A skew generalized power series ring $R[[S, \omega]]$ consists of all functions from a strictly ordered monoid $S$ to a ring $R$ whose support contains neither infinite descending chains nor infinite antichains, with pointwise addition, and with multiplication given by convolution twisted by an action $\omega$ of the monoid $S$ on the ring $R$. Special cases of the skew generalized power series ring construction are skew polynomial rings, skew Laurent polynomial rings, skew power series rings, skew Laurent series rings, skew monoid rings, skew group rings, skew Mal'cev-Neumann series rings, the ``untwisted" versions of all of these, and generalized power series rings. In this paper we obtain some necessary conditions on $R$, $S$ and $\omega$ such that the skew generalized power series ring $R[[S,\omega ]]$ is (uniquely) clean. As particular cases of our general results we obtain new theorems on skew Mal'cev-Neumann series rings, skew Laurent series rings, and generalized power series rings.
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ZERO DIVISOR GRAPHS OF SKEW GENERALIZED POWER SERIES RINGS
MOUSSAVI, AHMAD,PAYKAN, KAMAL Korean Mathematical Society 2015 대한수학회논문집 Vol.30 No.4
Let R be a ring, (S,${\leq}$) a strictly ordered monoid and ${\omega}$ : S ${\rightarrow}$ End(R) a monoid homomorphism. The skew generalized power series ring R[[S,${\omega}$]] is a common generalization of (skew) polynomial rings, (skew) power series rings, (skew) Laurent polynomial rings, (skew) group rings, and Mal'cev-Neumann Laurent series rings. In this paper, we investigate the interplay between the ring-theoretical properties of R[[S,${\omega}$]] and the graph-theoretical properties of its zero-divisor graph ${\Gamma}$(R[[S,${\omega}$]]). Furthermore, we examine the preservation of diameter and girth of the zero-divisor graph under extension to skew generalized power series rings.
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ARCHIMEDEAN SKEW GENERALIZED POWER SERIES RINGS
Moussavi, Ahmad,Padashnik, Farzad,Paykan, Kamal Korean Mathematical Society 2019 대한수학회논문집 Vol.34 No.2
Let R be a ring, ($S,{\leq}$) a strictly ordered monoid, and ${\omega}:S{\rightarrow}End(R)$ a monoid homomorphism. In [18], Mazurek, and Ziembowski investigated when the skew generalized power series ring $R[[S,{\omega}]]$ is a domain satisfying the ascending chain condition on principal left (resp. right) ideals. Following [18], we obtain necessary and sufficient conditions on R, S and ${\omega}$ such that the skew generalized power series ring $R[[S,{\omega}]]$ is a right or left Archimedean domain. As particular cases of our general results we obtain new theorems on the ring of arithmetical functions and the ring of generalized power series. Our results extend and unify many existing results.
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