Results 71 to 80 of about 3,771 (225)

Fourier Expansion‐Based Approach to the Parameter Space of Classical Systems

open access: yesAnnalen der Physik, Volume 538, Issue 7, July 2026.
ABSTRACT We propose a new approach to compute the classical metric tensor (CMT) and the Hannay curvature using Fourier series expansions in action‐angle variables. This approach circumvents the need for complex time‐domain integrals or the construction of generating functions, replacing them with algebraic combinations of Fourier coefficients. We prove
Marcos J. Hernández   +3 more
wiley   +1 more source

Two problems on varieties of groups generated by wreath products

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We outline results on varieties of groups generated by Cartesian and direct wreath products of abelian groups and pose two problems related to our recent results in that direction. A few related topics are also considered.
Vahagn H. Mikaelian
doaj   +1 more source

GENERIC VANISHING THEORY VIA MIXED HODGE MODULES

open access: yesForum of Mathematics, Sigma, 2013
We extend most of the results of generic vanishing theory to bundles of holomorphic forms and rank-one local systems, and more generally to certain coherent sheaves of Hodge-theoretic origin associated with irregular varieties. Our main tools are Saito’s
MIHNEA POPA, CHRISTIAN SCHNELL
doaj   +1 more source

Degenerating abelian varieties via log abelian varieties [PDF]

open access: yesAsian Journal of Mathematics, 2018
For any split totally degenerate abelian variety over a complete discrete valuation field, we construct a log abelian variety over the discrete valuation ring extending the given abelian variety. This generalizes the log Tate curve of Kato.
openaire   +2 more sources

Uncertainty Quantification of Analytical Solutions for the Nonlinear Space and Time Fractional Order ϕ4$$ {\phi}^4 $$ Equation Under Fuzziness

open access: yesEngineering Reports, Volume 8, Issue 7, July 2026.
Analytical fuzzy soliton solutions of a modified space–time fractional ϕ4$$ {\phi}^4 $$ model are derived using EHFM, capturing memory effects and uncertainty. Results reveal diverse wave structures and show how fractional order and fuzziness significantly influence soliton amplitude, localization, and propagation, with heightened sensitivity near the ...
Mohsin Khalid   +3 more
wiley   +1 more source

Abelian varieties over finite fields [PDF]

open access: yes, 2003
The Lenstra Treurfeest — A farewell conference, in honor of Hendrik W. Lenstra jr Berkeley, 21/22/23 - III - 2003 Some ideas, principles of thought and proof: • Study abelian varieties over finite fields, but also abelian varieties varying in a ...
Oort, F.
core  

Building Abelian Functions with Generalised Baker-Hirota Operators

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2012
We present a new systematic method to construct Abelian functions on Jacobian varieties of plane, algebraic curves. The main tool used is a symmetric generalisation of the bilinear operator defined in the work of Baker and Hirota.
Matthew England, Chris Athorne
doaj   +1 more source

Systèmes dynamiques algébriquement complètement intégrables et géométrie

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2015
In this paper I present the basic ideas and properties of the complex algebraic completely integrable dynamical systems. These are integrable systems whose trajectories are straight line motions on complex algebraic tori (abelian varieties). We make, via
Lesfari A.
doaj   +1 more source

The Modularity of an Abelian Variety

open access: yesAxioms
We introduce the concept of the modularity of an abelian variety defined over the rational number field extending the modularity of an elliptic curve. We discuss the modularity of an abelian variety over Q. We conjecture that a simple abelian variety over Q is modular.
openaire   +2 more sources

Subvarieties of Abelian Varieties

open access: yes, 2001
We discuss various constructions which allow one to embed a principally polarized abelian variety in the jacobian of a curve. Each of these gives representatives of multiples of the minimal cohomology class for curves which in turn produce subvarieties of higher dimension representing multiples of the minimal class.
openaire   +2 more sources

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