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Infinitesimal unipotent group schemes of complexity 1

Rolf Farnsteiner, Gerhard Röhrle, Detlef Voigt (2001)

Colloquium Mathematicae

We classify the uniserial infinitesimal unipotent commutative groups of finite representation type over algebraically closed fields. As an application we provide detailed information on the structure of those infinitesimal groups whose distribution algebras have a representation-finite principal block.

Introduction to Graded Geometry, Batalin-Vilkovisky Formalism and their Applications

Jian Qiu, Maxim Zabzine (2011)

Archivum Mathematicum

These notes are intended to provide a self-contained introduction to the basic ideas of finite dimensional Batalin-Vilkovisky (BV) formalism and its applications. A brief exposition of super- and graded geometries is also given. The BV–formalism is introduced through an odd Fourier transform and the algebraic aspects of integration theory are stressed. As a main application we consider the perturbation theory for certain finite dimensional integrals within BV-formalism. As an illustration we present...

Introduction to quantum Lie algebras

Gustav Delius (1997)

Banach Center Publications

Quantum Lie algebras are generalizations of Lie algebras whose structure constants are power series in h. They are derived from the quantized enveloping algebras U h ( g ) . The quantum Lie bracket satisfies a generalization of antisymmetry. Representations of quantum Lie algebras are defined in terms of a generalized commutator. The recent general results about quantum Lie algebras are introduced with the help of the explicit example of ( s l 2 ) h .

Invariant differential operators on the tangent space of some symmetric spaces

Thierry Levasseur, J. Toby Stafford (1999)

Annales de l'institut Fourier

Let 𝔤 be a complex, semisimple Lie algebra, with an involutive automorphism ϑ and set 𝔨 = Ker ( ϑ - I ) , 𝔭 = Ker ( ϑ + I ) . We consider the differential operators, 𝒟 ( 𝔭 ) K , on 𝔭 that are invariant under the action of the adjoint group K of 𝔨 . Write τ : 𝔨 Der 𝒪 ( 𝔭 ) for the differential of this action. Then we prove, for the class of symmetric pairs ( 𝔤 , 𝔨 ) considered by Sekiguchi, that d 𝒟 ( 𝔭 ) : d 𝒪 ( 𝔭 ) K = 0 = 𝒟 ( 𝔭 ) τ ( 𝔨 ) . An immediate consequence of this equality is the following result of Sekiguchi: Let ( 𝔤 0 , 𝔨 0 ) be a real form of one of these symmetric pairs ( 𝔤 , 𝔨 ) , and suppose that T is a K 0 -invariant...

Invariant measures and controllability of finite systems on compact manifolds

Philippe Jouan (2012)

ESAIM: Control, Optimisation and Calculus of Variations

A control system is said to be finite if the Lie algebra generated by its vector fields is finite dimensional. Sufficient conditions for such a system on a compact manifold to be controllable are stated in terms of its Lie algebra. The proofs make use of the equivalence theorem of [Ph. Jouan, ESAIM: COCV 16 (2010) 956–973]. and of the existence of an invariant measure on certain compact homogeneous spaces.

Invariant measures and controllability of finite systems on compact manifolds

Philippe Jouan (2012)

ESAIM: Control, Optimisation and Calculus of Variations

A control system is said to be finite if the Lie algebra generated by its vector fields is finite dimensional. Sufficient conditions for such a system on a compact manifold to be controllable are stated in terms of its Lie algebra. The proofs make use of the equivalence theorem of [Ph. Jouan, ESAIM: COCV 16 (2010) 956–973]. and of the existence of an invariant measure on certain compact homogeneous spaces.

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