Results 11 to 20 of about 77,438 (264)
A characterization of p-bases of rings of constants [PDF]
Open Mathematics, 2013 Abstract We obtain two equivalent conditions for m polynomials in n variables to form a p-basis of a ring of constants of some polynomial K-derivation, where K is a unique factorization domain of characteristic p > 0. One of these conditions involves Jacobians while the other some properties of factors.
Jędrzejewicz Piotr
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Subring of constants of a ring of characteristic p>0
Le Matematiche, 1993 Let A be a local ring of characteristic p>0 which has a p-basis over a subring C, and B be the subring of constants of A for a derivation (or derivations ) of A over C. We give a sufficient condition for B to have a p-basis over C. We add some examples.
Marilena Crupi
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On the ring of constants of a diagonalizable higher derivation
Journal of Pure and Applied Algebra, 1992 Let \(k\) be a field of positive characteristic \(p>0\), let \(q=p^ e\), and let \(\mu_ q\) denote the group scheme of \(q\)-th roots of unity over \(k\). Suppose the \(\mu_ q\) acts linearly on the affine \(n\)-space \(\mathbb{A}^ n\) over \(k\).
Ishibashi, Yasunori, Onoda, Nobuharu
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Optical appearance of Einstein-Æther black hole surrounded by thin disk
Nuclear Physics B, 2022 In Einstein-Æther theory, the Lorentz symmetry is locally broken in the high-energy regime due to the presence of the Æther field. This shall leave significant imprint on astronomical observation.
Hui-Min Wang, Zi-Chao Lin, Shao-Wen Wei
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Constant-Beamwidth Beamforming with Concentric Ring Arrays [PDF]
Sensors, 2021 Designing beampatterns with constant beamwidth over a wide range of frequencies is useful in many applications in speech, radar, sonar and communication. In this paper, we design constant-beamwidth beamformers for concentric ring arrays. The proposed beamformers utilize the circular geometry to provide improved beamwidth consistency compared to ...
Avital Kleiman +2 more
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A successful DFT calculation of carbon-13 NMR chemical shifts and carbon–fluorine spin–spin coupling constants in (η6-fluoroarene)tricarbonylchromium complexes† [PDF]
RSC Advances, 2014 Carbon-13 isotropic shielding constants and carbon–fluorine spin–spin coupling constants for fluorobenzene (1), 3-dimethylaminofluorobenzene (2) and 4-dimethylaminofluorobenzene (3) as well as for their tricarbonylchromium complexes (3–6) have been ...
Adam Gryff-Keller +1 more
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Molecules, 2021 The broadband rotational spectrum of jet-cooled laser-ablated thioproline was recorded. Two conformers of this system were observed and identified with the help of DFT and ab initio computations by comparison of the observed and calculated rotational ...
Juan Carlos López +4 more
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Kinetic studies on the reaction between dicyanocobinamide and hypochlorous acid. [PDF]
PLoS ONE, 2014 Hypochlorous acid (HOCl) is a potent oxidant generated by myeloperoxidase (MPO), which is an abundant enzyme used for defense against microbes. We examined the potential role of HOCl in corrin ring destruction and subsequent formation of cyanogen ...
Dhiman Maitra +7 more
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A dual approach to structure constants for K-theory of Grassmannians [PDF]
Discrete Mathematics & Theoretical Computer Science, 2020 The problem of computing products of Schubert classes in the cohomology ring can be formulated as theproblem of expanding skew Schur polynomial into the basis of ordinary Schur polynomials. We reformulate theproblem of computing the structure constants
Huilan Li, Jennifer Morse, Pat Shields
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Facile synthesis of vinyl esters of aromatic carboxylic acids with participation of 2-chloro-4,6-dimethoxy-1,3,5-triazine [PDF]
E3S Web of Conferences, 2023 In this work, the reaction of derivatives of benzoic acid containing substituents in the aromatic ring (1a-o) with 2-chloro-4,6dimethoxy-1,3,5-triazine (4) in the presence of N-methylmorpholine (6) has been synthesized active triazine esters of ...
Parmanov A. +3 more
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