Results 11 to 20 of about 1,065,720 (348)

On integrability and cyclicity of cubic systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2020
In this paper we study the integrability of a few families of the complex cubic system. We have obtained necessary and sufficient conditions for existence of a local analytic first integral.
Maša Dukarić
doaj   +1 more source

A variational method for integrability-breaking Richardson-Gaudin models [PDF]

open access: yes, 2017
We present a variational method for approximating the ground state of spin models close to (Richardson-Gaudin) integrability. This is done by variationally optimizing eigenstates of integrable Richardson-Gaudin models, where the toolbox of integrability ...
Caux, Jean-Sébastien   +3 more
core   +3 more sources

Strongly formal Weierstrass non-integrability for polynomial differential systems in $\mathbb{C}^2$

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2020
Recently it has been given a criterion for determining the weakly formal Weierstrass non-integrability of polynomial differential systems in $\mathbb{C}^2$.
Jaume Giné, Jaume Llibre
doaj   +1 more source

Integrating Integration [PDF]

open access: yes1996 Annual Conference Proceedings, 2020
Comment: 5 ...
openaire   +2 more sources

Integrative Oncology [PDF]

open access: yesEvidence-Based Complementary and Alternative Medicine, 2013
OA ...
Gustav Dobos   +4 more
openaire   +3 more sources

Integrity [PDF]

open access: yesJournal of Investigative Surgery, 2006
Integrity is the dedicated commitment to an accepted conduct and form of living ... is the honest response to professional attitudes and values.
openaire   +2 more sources

Integrability for Feynman integrals

open access: yesSciPost Physics Proceedings, 2023
We give a brief overview of the Yangian symmetry of Feynman integrals. After a short introduction to the Yangian and integrability, we motivate the emergence of integrable structures for Feynman integrals via the fishnet limit of AdS/CFT. We discuss the resulting Yangian differential equations for massless fishnets in four dimensions as well as ...
openaire   +3 more sources

The Dynamics of Digits: Calculating Pi with Galperin’s Billiards

open access: yesMathematics, 2020
In Galperin billiards, two balls colliding with a hard wall form an analog calculator for the digits of the number π . This classical, one-dimensional three-body system (counting the hard wall) calculates the digits of π in a base determined ...
Xabier M. Aretxabaleta   +5 more
doaj   +1 more source

Geodesics for the Painlevé–Gullstrand Form of Lense–Thirring Spacetime

open access: yesUniverse, 2022
Recently, the current authors have formulated and extensively explored a rather novel Painlevé–Gullstrand variant of the slow-rotation Lense–Thirring spacetime, a variant which has particularly elegant features—including unit lapse, intrinsically flat ...
Joshua Baines   +3 more
doaj   +1 more source

Generalized integrability conditions and target space geometry [PDF]

open access: yes, 2005
In some higher dimensional nonlinear field theories integrable subsectors with infinitely many conservation laws have been identified by imposing additional integrability conditions.
Adam   +17 more
core   +1 more source

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