Results 91 to 100 of about 9,449 (213)

Weaving knotted vector fields with tunable helicity [PDF]

, 2016
We present a general construction of divergence-free knotted vector fields from complex scalar fields, whose closed field lines encode many kinds of knots and links, including torus knots, their cables, the figure-8 knot and its generalizations.
Foster, David, Kedia, Hridesh, Dennis, Mark R., Dennis, Mark; id_orcid, Irvine, William T. M.   +4 more
core   +1 more source

Nonlinear q-Generalizations of Quantum Equations: Homogeneous and Nonhomogeneous Cases—An Overview

Entropy, 2017
Recent developments on the generalizations of two important equations of quantum physics, namely the Schroedinger and Klein–Gordon equations, are reviewed. These generalizations present nonlinear terms, characterized by exponents depending on an index q,
Fernando D. Nobre, Marco Aurélio Rego-Monteiro, Constantino Tsallis   +2 more
doaj   +1 more source

Multiquadratic fields generated by characters of A

Journal of Algebra, 2019
For a finite group $G$, let $K(G)$ denote the field generated over $\mathbb{Q}$ by its character values. For $n>24$, G. R. Robinson and J. G. Thompson proved that $$K(A_n)=\mathbb{Q}\left (\{ \sqrt{p^*} \ : \ p\leq n \ {\text{ an odd prime with } p\neq n-2}\}\right),$$ where $p^*:=(-1)^{\frac{p-1}{2}}p$. Confirming a speculation of Thompson, we show
Locus Dawsey, Madeline, Ono, Ken, Wagner, Ian   +2 more
openaire   +4 more sources

A Note on Ostrowski's Inequality

, 2002
This paper deals with the problem of estimating the deviation of the values of a function from its mean value. We consider the following special cases: i) the case of random variables (attached to arbitrary probability fields); ii) the comparison is ...
Florea, Aurelia, Niculescu, Constantin P
core  

Two-spinor description of massive particles and relativistic spin projection operators

Nuclear Physics B, 2018
On the basis of the Wigner unitary representations of the covering group ISL(2,C) of the Poincaré group, we obtain spin-tensor wave functions of free massive particles with arbitrary spin.
A.P. Isaev, M.A. Podoinitsyn
doaj   +1 more source

Pseudoharmonic maps and vector fields on CR manifolds

, 2010
We study pseudoharmonic maps from a compact strictly pseudoconvex CR manifolds and their generalizations e.g.
DRAGOMIR, Sorin, Y. KAMISHIMA
core  

New estimates on generalized Hermite–Hadamard–Mercer-type inequalities

Boundary Value Problems
The concept of a convex function plays a crucial role in fields of mathematical analysis and inequality theory. The importance of convex functions is exemplified by Mercer’s inequality.
Çetin Yıldız, Samet Erden, Seth Kermausuor, Daniel Breaz, Luminiţa-Ioana Cotîrlă   +4 more
doaj   +1 more source

Topological Classification of m-Fields on Two- and Three-Dimensional Manifolds with Boundary

, 2003
Розглядаються m-поля, що є узагальненням векторних полів Морса - Смейла для багатовидів iз краєм. Побудовано повні топологічні інваріанти m-полів на поверхнях i m-полів без замкнених траекторій на тривимірних багатовидах.
Пришляк, А.О.
core   +1 more source

GENERATION OF MAGNETIC FIELDS IN COSMOLOGY [PDF]

, 2002
8 pages; to be published in Collection of papers dedicated to 70th anniversary of S.G.
openaire   +2 more sources

Black bounces in conformal Killing gravity

European Physical Journal C: Particles and Fields
In this work, we analyse black bounce solutions in the recently proposed “Conformal Killing gravity” (CKG), by coupling the theory to nonlinear electrodynamics (NLED) and scalar fields.
José Tarciso S. S. Junior, Francisco S. N. Lobo, Manuel E. Rodrigues   +2 more
doaj   +1 more source