Results 21 to 30 of about 72,758 (294)

Quantum integrability of the deformed elliptic Calogero-Moser problem

, 2004
The integrability of the deformed quantum elliptic Calogero-Moser problem introduced by Chalykh, Feigin and Veselov is proven. Explicit recursive formulae for the integrals are found.
Berezin F. A., Chalykh O. A., Khodarinova L. A., L. A. Khodarinova, Oshima T., Whittaker E. T.   +5 more
core   +1 more source

Problems of integration [PDF]

Index on Censorship, 2001
The speaker of the German federal parliament, interviewed by Toralf Staud, reveals his anxieties about the growth of neofascist youth culture in the eastern Länder since reunification
openaire   +1 more source

On the Integrability of Persistent Quadratic Three-Dimensional Systems

Mathematics
We consider a nine-parameter familiy of 3D quadratic systems, x˙=x+P2(x,y,z), y˙=−y+Q2(x,y,z), z˙=−z+R2(x,y,z), where P2,Q2,R2 are quadratic polynomials, in terms of integrability.
Brigita Ferčec, Maja Žulj, Matej Mencinger   +2 more
doaj   +1 more source

On well-posedness of semilinear Rayleigh-Stokes problem with fractional derivative on ℝN

Advances in Nonlinear Analysis, 2021
We are devoted to the study of a semilinear time fractional Rayleigh-Stokes problem on ℝN, which is derived from a non-Newtonain fluid for a generalized second grade fluid with Riemann-Liouville fractional derivative.
He Jia Wei, Zhou Yong, Peng Li, Ahmad Bashir   +3 more
doaj   +1 more source

Stationary strings and branes in the higher-dimensional Kerr-NUT-(A)dS spacetimes

, 2007
We demonstrate complete integrability of the Nambu-Goto equations for a stationary string in the general Kerr-NUT-(A)dS spacetime describing the higher-dimensional rotating black hole.
A. Vilenkin, B. Carter, B. Carter, B. Kol, C. Hoyos-Badajoz, D. Kubiznák, David Kubiznák, F.R. Gantmacher, J. Polchinski, J. Polchinski, M. Snajdr, M. Snajdr, N. Hamammoto, P. Krtous, R. Emparan, S. Kobayashi, T. Albash, T. Houri, T. Ortin, V. Asnin, V.P. Frolov, V.P. Frolov, V.P. Frolov, Valeri P Frolov, W. Chen   +24 more
core   +1 more source

Lagrange-Poincare field equations [PDF]

, 2009
The Lagrange-Poincare equations of classical mechanics are cast into a field theoretic context together with their associated constrained variational principle.
Ellis, David C. P., Gay-Balmaz, Francois, Holm, Darryl D., Ratiu, Tudor S.   +3 more
core   +4 more sources

On the Regularity of Weak Solutions to Time-Periodic Navier–Stokes Equations in Exterior Domains

Mathematics, 2022
Consider the time-periodic viscous incompressible fluid flow past a body with non-zero velocity at infinity. This article gives sufficient conditions such that weak solutions to this problem are smooth.
Thomas Eiter
doaj   +1 more source

Adiabatic gauge potential and integrability breaking with free fermions

SciPost Physics
We revisit the problem of integrability breaking in free fermionic quantum spin chains. We investigate the so-called adiabatic gauge potential (AGP), which was recently proposed as an accurate probe of quantum chaos.
Balázs Pozsgay, Rustem Sharipov, Anastasiia Tiutiakina, István Vona
doaj   +1 more source

Étude géométrique et topologique du flot géodésique sur le groupe des rotations [PDF]

Surveys in Mathematics and its Applications, 2016
The aim of this survey paper is to investigate the algebraic complete integrability of Euler-Arnold's body description of the four dimensional rigid body, or equivalently of geodesics in SO(4) using left-invariant metrics that arise from inertia tensors,
Ahmed Lesfari
doaj  

Higher integrability for obstacle problem related to the singular porous medium equation

Boundary Value Problems, 2020
In this paper we study the self-improving property of the obstacle problem related to the singular porous medium equation by using the method developed by Gianazza and Schwarzacher (J. Funct. Anal. 277(12):1–57, 2019).
Qifan Li
doaj   +1 more source