Results 31 to 40 of about 7,321 (260)

GEMs and amplitude bounds in the colored Boulatov model [PDF]

open access: yes, 2013
In this paper we construct a methodology for separating the divergencies due to different topological manifolds dual to Feynman graphs in colored group field theory.
Caravelli, Francesco
core   +2 more sources

On L to H-mode transitions of the tokamak and entropy reduction [PDF]

open access: yesNuclear Technology and Radiation Protection, 2006
In an ideal case, it is assumed that the models for tokamak and stellarator plasma behaviour lead to the theory of invariant manifolds by Rastović [Chaos, Solitons & Fractals, 2007]. But, at the present state of knowledge a more realistic concept for
Rastović Danilo
doaj   +1 more source

Mirror symmetry for five-parameter Hulek-Verrill manifolds

open access: yesSciPost Physics, 2023
We study the mirrors of five-parameter Calabi-Yau threefolds first studied by Hulek and Verrill in the context of observed modular behaviour of the zeta functions for Calabi-Yau manifolds. Toric geometry allows for a simple explicit construction of these
Philip Candelas, Xenia de la Ossa, Pyry Kuusela, Joseph McGovern
doaj   +1 more source

The Dual and Mirror Images of the Dunwoody 3-Manifolds

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2013
Recently, in 2013, we proved that certain presentations present the Dunwoody 3-manifold groups. Since the Dunwoody 3-manifolds do not have a unique Heegaard diagram, we cannot determine a unique group presentation for the Dunwoody 3-manifolds. It is well
Soo Hwan Kim, Yangkok Kim
doaj   +1 more source

Haantjes Algebras of Classical Integrable Systems

open access: yes, 2019
A tensorial approach to the theory of classical Hamiltonian integrable systems is proposed, based on the geometry of Haantjes tensors. We introduce the class of symplectic-Haantjes manifolds (or $\omega \mathscr{H}$ manifolds), as the natural setting ...
Tempesta, Piergiulio, Tondo, Giorgio
core   +1 more source

Entrainment Dynamics Organised by Global Manifolds in a Circadian Pacemaker Model

open access: yesFrontiers in Applied Mathematics and Statistics, 2021
Circadian rhythms are established by the entrainment of our intrinsic body clock to periodic forcing signals provided by the external environment, primarily variation in light intensity across the day/night cycle.
Jennifer L. Creaser   +4 more
doaj   +1 more source

Steve Smale and Geometric Mechanics [PDF]

open access: yes, 1993
Thus, one can say-perhaps with only a slight danger of oversimplification- that reduction theory synthesises the work of Smale, Arnold (and their predecesors of course) into a bundle, with Smale as the base and Arnold as the fiber.
Marsden, Jerrold E.
core   +1 more source

Geometry of Paraquaternionic Kahler manifolds with torsion

open access: yes, 2005
We study the geometry of PQKT-connections. We find conditions to the existence of a PQKT-connection and prove that if it exists it is unique.
Alekseevsky   +33 more
core   +1 more source

M2-branes, Einstein manifolds and triple systems [PDF]

open access: yes, 2009
This is the written version of a talk given on 1 July 2009 at the XXV Max Born Symposium: the Planck Scale, held in Wroclaw, Poland. I review the possible transverse geometries to supersymmetric M2-brane configurations and discuss the representation ...
Jerzy Kowalski-Glikman   +3 more
core   +3 more sources

Mapping class groups of h-cobordant manifolds

open access: yesForum of Mathematics, Sigma
We prove that the mapping class group is not an h-cobordism invariant of high-dimensional manifolds by exhibiting h-cobordant manifolds whose mapping class groups have different cardinalities.
Samuel Muñoz-Echániz
doaj   +1 more source

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