Results 111 to 120 of about 67,761 (247)

Affine varieties and lie algebras of vector fields

open access: yesManuscripta Mathematica, 1993
Let \(X, Y\subset\mathbb A^ n\) be non-empty closed subvarieties of affine space \(\mathbb A^ n\) over an algebraically closed field of characteristic zero. Let \(D_ X\), \(D_ Y\) be the Lie algebra of global vector fields on \(X\), respectively on \(Y\).
Müller, Gerd, Hauser, Herwig
openaire   +1 more source

Integrable modules for twisted toroidal extended affine Lie algebras [PDF]

open access: green, 2020
S. Eswara Rao   +2 more
openalex   +1 more source

Time optimal problems on Lie groups and applications to quantum control

open access: yesCommunications in Analysis and Mechanics
In this paper we introduce a natural compactification of a left (right) invariant affine control system on a semi-simple Lie group $ G $ in which the control functions belong to the Lie algebra of a compact Lie subgroup $ K $ of $ G $ and we investigate ...
Velimir Jurdjevic
doaj   +1 more source

Affine Lie algebras and product–sum identities

open access: yesJournal of Algebra, 2007
A 1926 theorem of I. Schur concerns partitions of an integer \(n\) into parts congruent to \(\pm 1\pmod 6\). This leads to the consideration of the infinite product \[ \prod_{n=1}^{\infty} \frac{1}{(1-q^{6n-1})(1-q^{6n-5})}\tag{1} \] Any nontrivial rewriting of such an infinite product is potentially important as it might yield a partition identity, or,
Jing, Naihuan, Xia, Li-meng
openaire   +1 more source

Local charges in involution and hierarchies in integrable sigma-models

open access: yesJournal of High Energy Physics, 2017
Integrable σ-models, such as the principal chiral model, ℤ T $$ {\mathbb{Z}}_T $$ -coset models for T ∈ ℤ ≥ 2 $$ T\in {\mathbb{Z}}_{\ge 2} $$ and their various integrable deformations, are examples of non-ultralocal integrable field theories described by
S. Lacroix, M. Magro, B. Vicedo
doaj   +1 more source

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