Results 71 to 80 of about 185,528 (178)

Minimal area surfaces in AdS_{n+1} and Wilson loops

open access: yes, 2017
The AdS/CFT correspondence relates the expectation value of Wilson loops in N=4 SYM to the area of minimal surfaces in AdS_5 In this paper we consider minimal area surfaces in generic Euclidean AdS_{n+1} using the Pohlmeyer reduction in a similar way ...
He, Yifei   +2 more
core   +1 more source

New symmetry of intended curved reaches

open access: yesBehavioral and Brain Functions, 2010
Background Movement regularities are inherently present in automated goal-directed motions of the primate's arm system. They can provide important signatures of intentional behaviours driven by sensory-motor strategies, but it remains unknown if during ...
Torres Elizabeth B
doaj   +1 more source

Two-point gauge invariant quark Green's functions with polygonal phase factor lines

open access: yes, 2012
Polygonal lines are used for the paths of the gluon field phase factors entering in the definition of gauge invariant quark Green's functions. This allows classification of the Green's functions according to the number of segments the polygonal lines ...
Sazdjian, H.
core   +3 more sources

First integrals in a cubic differential system with one invariant straight line and one invariant cubic

open access: yes, 2023
În lucrare se examinează sistemul diferențial cubic cu punctul singular nbsp;de tip centru sau focar, care are o dreaptă invariantă și o cubică invariantă. Pentru acest sistem sunt determinate condițiile de existență a centrului în nbsp;prin construirea integralelor prime de forma ...
Cozma, D.V., Cozma, D.
openaire   +1 more source

Global topological classification of Lotka-Volterra quadratic differential systems

open access: yesElectronic Journal of Differential Equations, 2012
The Lotka-Volterra planar quadratic differential systems have numerous applications but the global study of this class proved to be a challenge difficult to handle.
Dana Schlomiuk, Nicolae Vulpe
doaj  

Some remarks about Mishchenko-Fomenko subalgebras [PDF]

open access: yes, 2014
We discuss and compare two different approaches to the notion of Mishchenko--Fomenko subalgebras in Poisson-Lie algebras of finite-dimensional Lie algebras.
Bolsinov, Alexey
core  

Spectral theory and nonlinear problems Théorie spectrale et problèmes non-linéaires [PDF]

open access: yesSurveys in Mathematics and its Applications, 2010
We present a Lie algebra theoretical schema leading to integrable systems, based on the Kostant-Kirillov coadjoint action. Many problems on Kostant-Kirillov coadjoint orbits in subalgebras of infinite dimensional Lie algebras (Kac-Moody Lie algebras)
Ahmed Lesfari
doaj  

Cubic differential systems with six real invariant straight lines along two directions

open access: yesStudia Universitatis Moldaviae: Stiinte Umanistice, 2008
Sunt clasi…cate sistemele cubice cu exact ¸sase drepte invariante de dou¼a direc¸tii ¸tinându-se cont la enumerare de gradul lor de invarian¸t¼a. Se arat¼a c¼a, din punct de vedere topologic, sunt 11 clase distincte de astfel de sisteme. Pentru …ecare dintre aceste clase este construit pe discul Poincaré portretul fazic.
Puţuntică, V.M., Şubă, A.S.
openaire   +3 more sources

Parallel algorithm for determining motion vectors in ice floe images by matching edge features [PDF]

open access: yes
A parallel algorithm is described to determine motion vectors of ice floes using time sequences of images of the Arctic ocean obtained from the Synthetic Aperture Radar (SAR) instrument flown on-board the SEASAT spacecraft.
Manohar, M.   +2 more
core   +1 more source

An exact prediction of [script N] = 4 supersymmetric Yang–Mills theory for string theory [PDF]

open access: yes, 2001
We propose that the expectation value of a circular BPS-Wilson loop in [script N] = 4 supersymmetric Yang–Mills can be calculated exactly, to all orders in a 1/N expansion and to all orders in g2N.
Drukker, Nadav, Gross, David J.
core  

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