Results 11 to 20 of about 13,211 (169)

Elliptic function solutions and travelling wave solutions of nonlinear Dodd-Bullough-Mikhailov, two-dimensional Sine-Gordon and coupled Schrödinger-KdV dynamical models

open access: yesResults in Physics, 2018
In this article, we construct the traveling wave and elliptic function solutions of some special nonlinear evolution equations which are arising in mathematical physics, solid-state physics, fluid flow, fluid dynamics, nonlinear optics, electromagnetic ...
Dianchen Lu   +2 more
doaj   +1 more source

Subspace designs based on algebraic function fields [PDF]

open access: yesTransactions of the American Mathematical Society, 2018
Subspace designs are a (large) collection of high-dimensional subspaces $\{H_i\}$ of $\F_q^m$ such that for any low-dimensional subspace $W$, only a small number of subspaces from the collection have non-trivial intersection with $W$; more precisely, the sum of dimensions of $W \cap H_i$ is at most some parameter $L$.
Guruswami, Venkatesan   +2 more
openaire   +5 more sources

An algebraic method for quasi-linear first-order ODEs

open access: yesITM Web of Conferences, 2018
In this paper, we consider the class of quasi-linear first-order ODEs of the form y′ = P(x; y), where P is a polynomial in y with coefficients in ℂ(x), and study their algebraic solutions.
Vo Thieu N.
doaj   +1 more source

(G,F)-points on ℚ-algebraic varieties [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics
Let ℚ be the field of rational numbers, and let C be an algebraically closed field containing ℚ. Let G ∈ ℚ[x,y,z] be a polynomial, then the zero set of G is Z(G) = {P ∈ Cⁿ | G(P) = 0}.
Yangcheng Li, Hongjian Li
doaj   +1 more source

Renormalisation group equations for BRST-restored chiral theory in dimensional renormalisation: application to two-loop chiral-QED

open access: yesJournal of High Energy Physics, 2023
We discuss how renormalisation group equations can be consistently formulated using the algebraic renormalisation framework, in the context of a dimensionally-renormalised chiral field theory in the BMHV scheme, where the BRST symmetry, originally broken
Hermès Bélusca-Maïto
doaj   +1 more source

A differential representation of cosmological wavefunctions

open access: yesJournal of High Energy Physics, 2022
Our understanding of quantum field theory rests largely on explicit and controlled calculations in perturbation theory. Because of this, much recent effort has been devoted to improve our grasp of perturbative techniques on cosmological spacetimes. While
Aaron Hillman, Enrico Pajer
doaj   +1 more source

Dynamic Reconstruction Algorithm of Three-Dimensional Temperature Field Measurement by Acoustic Tomography

open access: yesSensors, 2017
Accuracy and speed of algorithms play an important role in the reconstruction of temperature field measurements by acoustic tomography. Existing algorithms are based on static models which only consider the measurement information.
Yanqiu Li, Shi Liu, Schlaberg H. Inaki
doaj   +1 more source

Crossed Products over Algebraic Function Fields

open access: yesJournal of Algebra, 1995
For every finite group \(G\), an integer \(m(G)\) is defined as the maximum over all primes \(p\) dividing the order of \(G\) of the minimal lengths of chains \(\{1 \}= P_0 \varsubsetneq P_1 \varsubsetneq \dots \varsubsetneq P_r =P\) where \(P\) is a Sylow \(p\)-subgroup of \(G\) and \(P_{i-1}\) is a normal subgroup in \(P_i\) such that \(P_i/ P_{i- 1}\
Fein, B., Schacher, M.
openaire   +1 more source

Exact thermal properties of free-fermionic spin chains

open access: yesSciPost Physics, 2021
An exact description of integrable spin chains at finite temperature is provided using an elementary algebraic approach in the complete Hilbert space of the system.
Michał Białończyk, Fernando Javier Gómez-Ruiz, Adolfo del Campo
doaj   +1 more source

Thermosolutal convection in a rotating viscoelastic Walters fluid

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2019
A summary of the mesoscopic theory of liquid crystals is presented. Mesoscopic field quantities are defined on the enlarged space of position, time and orientation.
Christina Papenfuss
doaj   +1 more source

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