Results 21 to 30 of about 81,325 (254)
Universal elements of unitriangular matrices groups
Қарағанды университетінің хабаршысы. Математика сериясы, 2017 The following theorems are proved for a matrix g from the group of unitriangular matrices over a commutative and associative ring K of finite dimension of greater than three with unity: 1) if the matrix g is universal then all of its elements are on the
A.A. Konyrkhanova, N.G. Khisamiev
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On $\mathcal Z$-reflexive rings [PDF]
Mathematica BohemicaWe introduce the notion of $\mathcal Z$-reflexive rings to describe reflexivity of rings in terms of their singular ideals. We show that $\mathcal Z$-reflexive ring is proper common generalization of a central reflexive ring, $\mathcal Z$-reversible ring,
Nirbhay Kumar
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Minimal reversible nonsymmetric rings [PDF]
Journal of Pure and Applied Algebra, 2019 Marks showed that $\mathbb{F}_2Q_8$, the $\mathbb{F}_2$ group algebra over the quaternion group, is a reversible nonsymmetric ring, then questioned whether or not this ring is minimal with respect to cardinality. In this work, it is shown that the cardinality of a minimal reversible nonsymmetric ring is indeed 256.
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Aqueous extraction of limonin from Citrus reticulate Blanco
Czech Journal of Food Sciences, 2012 The replacement of organic solutions in the extraction of limonin from citrus seeds with an alkaline solution was investigated. This method was based on the reversible conversion of limonin to limonoate A-ring lactone via ring-opening of D-ring lactone ...
Can Liu +4 more
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, 2021 This paper introduces and studies nil-reversible rings wherein we call a ring R nil-reversible if the left and right annihilators of every nilpotent element of R are equal. Reversible rings (and hence reduced rings) form a proper subclass of nil-reversible rings and hence we provide some conditions for a nil-reversible ring to be reduced.
Subba, Sanjiv, Subedi, Tikaram
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CHIMIA, 1990 As a first case in the field of spirochromenes, the energy barrier for thermally reversible ring opening of 2,2?-spirobichromenes (Scheme) is measured by racemization of preparatively enriched enantiomers.
Barbara Stephan +3 more
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Molecules, 2018 Because lysine-specific demethylase 1 (LSD1) regulates the maintenance of cancer stem cell properties, small-molecule inhibitors of LSD1 are expected to be useful for the treatment of several cancers.
Hideaki Niwa +4 more
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Journal of Algebra Combinatorics Discrete Structures and Applications, 2017 Summary: We study some properties related to zero divisors and reversibility in noncommutative rings.
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Reversibility of Rings with Respect to the Jacobson Radical
Mediterranean Journal of Mathematics, 2017 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Calci, Mete Burak +3 more
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On reversibility problem in DNA bases over a class of rings
Applied Mathematics in Science and EngineeringLet [Formula: see text] be a non-chain ring of characteristic 4, where [Formula: see text] and [Formula: see text]. In this article, we discuss reversible cyclic codes of odd lengths over the ring [Formula: see text].
Amal S. Alali +4 more
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