Results 11 to 20 of about 359,696 (180)

Polynomial inverse integrating factors for polynomial vector fields

open access: yesDiscrete & Continuous Dynamical Systems - A, 2007
We present some results and one open question on the existence of polynomial inverse integrating factors for polynomial vector fields.
Antoni Ferragut   +2 more
openaire   +3 more sources

Exact Solutions for Isobaric Inhomogeneous Couette Flows of a ‎Vertically Swirling Fluid [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2023
The paper generalizes the partial class of exact solutions to the Navier–Stokes equations. The proposed exact solution describes an inhomogeneous three-dimensional shear flow in a layer of a viscous incompressible fluid.
Sergey Ershkov   +2 more
doaj   +1 more source

Equivariant decomposition of polynomial vector fields [PDF]

open access: yesCommunications in Contemporary Mathematics, 2020
To compute the unique formal normal form of families of vector fields with nilpotent linear part, we choose a basis of the Lie algebra consisting of orbits under the action of the nilpotent linear part. This creates a new problem: to find explicit formulas for the structure constants in this new basis. These are well known in the 2D case, and recently
Mokhtari, Fahimeh, Sanders, J.A.
openaire   +3 more sources

CALCULATION OF THE MINIMUM DEGREE OF A POLYNOMIAL OVER A FINITE FIELD FOR A VECTOR BOOLEAN MAP GIVEN IN ANF

open access: yesСовременные информационные технологии и IT-образование, 2019
We consider vector mappings over the set of 0 and 1 given by the set of Boolean functions. Boolean functions included in the map are given in ANF. Having fixed the rule according to which the binary vectors are associated with the elements of a finite ...
Sergey A. Belov
doaj   +1 more source

Realization problems for limit cycles of planar polynomial vector fields [PDF]

open access: yes, 2015
We show that for any finite configuration of closed curves $\Gamma\subset \mathbb{R}^2$, one can construct an explicit planar polynomial vector field that realizes $\Gamma$, up to homeomorphism, as the set of its limit cycles with prescribed periods ...
Margalef-Bentabol, Juan   +1 more
core   +2 more sources

Explicit Geometric Integration of Polynomial Vector Fields [PDF]

open access: yesBIT Numerical Mathematics, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mclachlan, Robert Iain.   +1 more
openaire   +2 more sources

Computer studies of polynomial solutions for gyrostat dynamics [PDF]

open access: yesКомпьютерные исследования и моделирование, 2018
We study polynomial solutions of gyrostat motion equations under potential and gyroscopic forces applied and of gyrostat motion equations in magnetic field taking into account Barnett-London effect.
Alexander Vasilievich Zyza
doaj   +1 more source

The tower of Kontsevich deformations for Nambu-Poisson structures on $\mathbb{R}^d$: Dimension-specific micro-graph calculus

open access: yesSciPost Physics Proceedings, 2023
In Kontsevich's graph calculus, internal vertices of directed graphs are inhabited by multi - vectors, e.g., Poisson bi - vectors; the Nambu - determinant Poisson brackets are differential - polynomial in the Casimir(s) and density $\varrho$ times Levi -
Ricardo Buring, Arthemy V. Kiselev
doaj   +1 more source

Isochronicity and commutation of polynomial vector fields [PDF]

open access: yesSiberian Mathematical Journal, 1999
21 pages, LaTeX, 5 PostScript ...
Volokitin, E. P., Ivanov, V. V.
openaire   +3 more sources

Configuration of Zeros of Isochronous Vector Fields of Degree 5

open access: yesComplexity, 2021
In this paper, we give the algebraic conditions that a configuration of 5 points in the plane must satisfy in order to be the configuration of zeros of a polynomial isochronous vector field.
Julio Cesar Avila   +2 more
doaj   +1 more source

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