Results 11 to 20 of about 359,552 (281)

A characterization of p-bases of rings of constants [PDF]

open access: yesOpen Mathematics, 2013
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 UFD of characteristic p>0.
Jędrzejewicz Piotr
doaj   +4 more sources

Irreducible Jacobian derivations in positive characteristic

open access: yesOpen Mathematics, 2014
We prove that an irreducible polynomial derivation in positive characteristic is a Jacobian derivation if and only if there exists an n-1-element p-basis of its ring of constants. In the case of two variables we characterize these derivations in terms of
Jędrzejewicz Piotr
doaj   +3 more sources

Branching rules in the ring of superclass functions of unipotent upper-triangular matrices [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2009
It is becoming increasingly clear that the supercharacter theory of the finite group of unipotent upper-triangular matrices has a rich combinatorial structure built on set-partitions that is analogous to the partition combinatorics of the classical ...
Nathaniel Thiem
doaj   +7 more sources

Rings of constants of polynomial derivations and p-bases [PDF]

open access: yes, 2013
We present a survey of results concerning p-bases of rings of constants with respect to polynomial derivations in characteristic p > 0. We discuss characterizations of rings of constants, properties of their generators and a general characterization of ...
Jędrzejewicz, Piotr
core   +4 more sources

Subring of constants of a ring of characteristic p>0

open access: yesLe 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
doaj   +3 more sources

Optical appearance of Einstein-Æther black hole surrounded by thin disk

open access: yesNuclear 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
doaj   +1 more source

Rings of constants of linear derivations on Fermat rings [PDF]

open access: yesCommunications in Algebra, 2018
In this paper we characterize all the linear $\mathbb{C}$-derivations of the Fermat ring. We show that the Fermat ring has linear $\mathbb{C}$-derivations with trivial ring of constants and construct some examples.
Veloso, Marcelo Oliveira   +1 more
openaire   +2 more sources

Decoding the Structure of Non-Proteinogenic Amino Acids: The Rotational Spectrum of Jet-Cooled Laser-Ablated Thioproline

open access: yesMolecules, 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
doaj   +1 more source

Kinetic studies on the reaction between dicyanocobinamide and hypochlorous acid. [PDF]

open access: yesPLoS 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
doaj   +1 more source

A dual approach to structure constants for K-theory of Grassmannians [PDF]

open access: yesDiscrete 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
doaj   +1 more source

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