Results 1 to 10 of about 84,435 (298)

Flatness for the moment map for representations of quivers

open access: yesJournal of Algebra, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Su, Xiuping
exaly   +3 more sources

On the Jacobian of the Harmonic Moment Map [PDF]

open access: yesComplex Analysis and Operator Theory, 2008
In this paper we represent harmonic moments in the language of transfinite functions, that is projective limits of polynomials in infinitely many variables. We obtain also an explicit formula for the Jacobian of a generalized harmonic moment map.
Gustafsson, Björn, Tkachev, Vladimir G.
openaire   +3 more sources

Investigation of seismic parameters, calculation of Seismic moment and Geologic moment Kopeh-Dagh zone in Northeast of Iran [PDF]

open access: yesمخاطرات محیط طبیعی, 2021
The Kopeh-Dagh zone is the northern deformation zone due to the convergence of the Arabian and Eurasian plates Which forms an active area with a northwest-southeast trend.
Hadi Alinia, Mohammad Mahdi Khatib
doaj   +1 more source

Stratification of singular hyperkähler quotients

open access: yesComplex Manifolds, 2022
Hyperkähler quotients by non-free actions are typically singular, but are nevertheless partitioned into smooth hyperkähler manifolds. We show that these partitions are topological stratifications, in a strong sense.
Mayrand Maxence
doaj   +1 more source

Generic simplicity of quantum Hamiltonian reductions

open access: yesComptes Rendus. Mathématique, 2021
Let a reductive group $G$ act on a smooth affine complex algebraic variety $X.$ Let $\mathfrak{g}$ be the Lie algebra of $G$ and $\mu :T^*(X)\rightarrow \mathfrak{g}^*$ be the moment map.
Tikaradze, Akaki
doaj   +1 more source

Lie Group Statistics and Lie Group Machine Learning Based on Souriau Lie Groups Thermodynamics & Koszul-Souriau-Fisher Metric: New Entropy Definition as Generalized Casimir Invariant Function in Coadjoint Representation

open access: yesEntropy, 2020
In 1969, Jean-Marie Souriau introduced a “Lie Groups Thermodynamics” in Statistical Mechanics in the framework of Geometric Mechanics. This Souriau’s model considers the statistical mechanics of dynamic systems in their “space of evolution” associated to
Frédéric Barbaresco
doaj   +1 more source

Nonlinear Model Reduction by Moment-Matching for a Point Absorber Wave Energy Conversion System

open access: yesJournal of Marine Science and Engineering, 2022
This paper presents a data-driven model reduction by moment-matching approach to construct control-oriented models for a point absorber device. The methodology chosen and developed generates models which are input-to-state linear, with any nonlinear ...
Guglielmo Papini   +4 more
doaj   +1 more source

Assignments and abstract moment maps [PDF]

open access: yesJournal of Differential Geometry, 1999
moment maps arise as a generalization of genuine moment maps on symplectic manifolds when the symplectic structure is discarded, but the relation between the mapping and the action is kept. Particular examples of abstract moment maps had been used in Hamiltonian mechanics for some time, but the abstract notion originated in the study of cobordisms of ...
Ginzburg, Viktor L.   +2 more
openaire   +4 more sources

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