Results 11 to 20 of about 1,575,297 (279)
Colloquium Mathematicum, 2003 A ring is an \(E\)-ring if every endomorphism of its additive group is multiplication by a ring element. A ring is an \(A\)-ring if every automorphism of its additive group is multiplication by a ring element. While every \(E\)-ring is obviously an \(A\)-ring, the authors construct an \(A\)-ring which is not an \(E\)-ring. However, they conjecture that
Dugas, Manfred, Feigelstock, Shalom
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Dynamic Stabilization of Rings of Low Rigidity after the Ring-Rolling
Механика машин, механизмов и материалов, 2020 The physics fundamentals and advantages of ring-rolling the products are described. The analysis of production volumes of the products by ring-rolling in Europe is carried out. The definition of rings of low rigidity is given.
Vladimir E. Antonyuk +1 more
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Tree-Ring Skeleton Plotting by Computer
, 1979 Skeleton plotting is an established manual technique for representing the relative narrowness of tree rings in a single radius. These plots can be used as a visual aid to crossdating.
Cropper, John Philip
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From Diophantian Equations to Matrix Equations (Iv) - Diophantian Equations of Higher Degree [PDF]
Educaţia 21In the context of training and developing the skills of teachers, students and children to solve exercises and problems in Mathematics, in this paper we propose to continue the steps started in the first three papers with the same generic title and ...
Teodor Dumitru Vălcan
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Ring-LWE in Polynomial Rings [PDF]
, 2012 The Ring-LWE problem, introduced by Lyubashevsky, Peikert, and Regev (Eurocrypt 2010), has been steadily finding many uses in numerous cryptographic applications. Still, the Ring-LWE problem defined in [LPR10] involves the fractional ideal R ∨, the dual of the ring R , which is the source of many theoretical and implementation technicalities. Until now,
Ducas, Léo, Durmus, Alain
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Route to Chaos in a Unidirectional Ring of Three Diffusively Coupled Erbium-Doped Fiber Lasers
Photonics, 2023 We numerically investigate the dynamics of a ring consisting of three unidirectionally coupled Erbium-Doped Fiber Lasers (EDLFs) without external pump modulation.
José Octavio Esqueda de la Torre +5 more
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Morita contexts and unitary ideals of rings [PDF]
Proceedings of the Estonian Academy of Sciences, 2021 In this paper we study Morita contexts between rings without identity. We prove that if two associative rings are connected by a Morita context with surjective mappings, then these rings have isomorphic quantales of unitary ideals.
Kristo Väljako, Valdis Laan
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, 2009 The International Tree-Ring Data Bank (ITRDB) is an invaluable resource, providing access to a massive and growing cache of tree-ring data. Oxygen, carbon, nitrogen and hydrogen isotope treering studies, which have provided valuable climatic and ...
Csank, Adam Z.
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Mathematical Model of Piston Ring Sealing in Combustion Engine
Polish Maritime Research, 2015 This paper presents a mathematical model of piston-rings-cylinder sealing (TPC) of a combustion engine. The developed model is an itegrated model of gas flow through gaps in TPC unit, displacements and twisting motions of piston rings in ring grooves as ...
Koszałka Grzegorz, Guzik Mirosław
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Journal of Education, Health and Sport, 2019 Cerebral palsy is a broad term, including various, changing with age movement and postural disorders of cerebral origin [1]. Gait of children suffering from cerebral palsy is characterized by changeability.
Monika Stecko +7 more
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