Finite Dimensional Algebras
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. POLITOPOS DE GOSSET E OS GRUPOS DE COXETER E(N) / GOSSET POLYTOPES AND THE COXETER GROUPS E(N)
A convex polytope is semiregular if all its faces are regular and the group of isometries acts transitively over vertices. The classification of semiregular polytopes includes a few infinite families, some low dimensional exceptions and a family, the Gosset polytopes, which is defined for dimension 3 to 8. Certain groups of isometries of R(n) generated by re
Publicado em: 2010
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2. Granded algebras and graded polynomial identities / Algebras graduadas e identidades polinomiais graduadas
In this work we study graded algebras and graded polynomial identities. We study two types of problems: finding the possible gradings on a given algebra, and finding a basis forthe graded identities of a given algebra. We begin with the basic definitions and results onalgebras, graded algebras, (graded) polynomial identities, etc. We give a description of th
Publicado em: 2007
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3. Algebras biquaternionicas : construção, classificação e condições de existencia via formas quadraticas e involuções / Biquaternion algebras : construction, classification and existence condition through quadratic forms and involutions
Neste trabalho, estudamos as álgebras biquaterniônicas, que são um tipo especial de álgebra central simples de dimensão 16, obtida como produto tensorial de duas álgebras de quatérnios. A teoria de formas quadráticas é aplicada para estudarmos critérios de decisão sobre quando uma álgebra biquaterniônica é de divisão e quando duas destas álge
Publicado em: 2006
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4. Geometric invariant theory and representations of quivers / Teoria geometrica dos invariantes e representações de quivers
This thesis is divided into two parts. ln the first part we present the main ideas and tools of Geometric lnvariant Theory, which is concerned with the following problem: ls it possible to give an algebraic structure to the quotient of an algebraic variety by the action of an algebraic group? Qne of the most important results says that an algebraic quotient
Publicado em: 2006
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5. Algebras de Lie finitamente apresentaveis
Nesta dissertação de mestrado, estudamos propriedades de álgebras de Lie. As Álgebras de Lie têm grande importância nao somente na teoria de álgebras não associativas, elas surgem também em geometria, topologia e no estudo da teoria de grupos por exemplo. As definições e resultados básicos sobre álgebras de Lie estão inclusos no Capítulo 2. Pa
Publicado em: 2005
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6. FLEXIBLE POWER-ASSOCIATIVE ALGEBRAS OF DEGREE 1*
It is shown here that there are essentially two different types of simple flexible, strictly power-associative finite dimensional algebras of degree 1; namely, the fields and the algebras of Kokoris. This follows readily from the perhaps more basic result that characterizes the simple commutative power-associative finite dimensional algebras of degree 1 as f
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7. Continuous family of finite-dimensional representations of a solvable Lie algebra arising from singularities
A natural mapping from the set of complex analytic isolated hypersurface singularities to the set of finite dimensional Lie algebras is first defined. It is proven that the image under this natural mapping is contained in the set of solvable Lie algebras. This approach gives rise to a continuous inequivalent family of finite dimensional representations of a
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8. The Order of the Antipode of Finite-dimensional Hopf Algebra
Examples of finite-dimensional Hopf algebras over a field, whose antipodes have arbitrary even orders ≥4 as mappings, are furnished. The dimension of the Hopf algebra is qn+1, where the antipode has order 2q, q ≥ 2, and n is an arbitrary positive integer. The algebras are not semisimple, and neither they nor their dual algebras are unimodular.
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9. The restricted simple Lie algebras are of classical or Cartan type
The classification of the finite-dimensional restricted simple Lie algebras over an algebraically closed field F of prime characteristic p > 7 is announced. Such an algebra is either of classical type (an analogue over F of a finite-dimensional simple Lie algebra over the complex numbers) or of Cartan type (an analogue over F of one of the infinite Lie algeb
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10. Vertex algebras, Kac-Moody algebras, and the Monster
It is known that the adjoint representation of any Kac-Moody algebra A can be identified with a subquotient of a certain Fock space representation constructed from the root lattice of A. I define a product on the whole of the Fock space that restricts to the Lie algebra product on this subquotient. This product (together with a infinite number of other produ
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11. Laplace operators of infinite-dimensional Lie algebras and theta functions
Until recently, the generalized Casimir operator constructed by Kac [Kac, V. G. (1974) Funct. Anal. Appl. 8, 68-70] has been the only known element of the center of a completion of the enveloping algebra of a Kac-Moody algebra. It has been conjectured [Deodhar, V. V., Gabber, O. & Kac, V. G. (1982) Adv. Math. 45, 92-116], however, that the image of the Haris
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12. Capelli bitableaux and Z-forms of general linear Lie superalgebras.
The combinatorics of the enveloping algebra UQ(pl(L)) of the general linear Lie superalgebra of a finite dimensional Z2-graded Q-vector space is studied. Three non-equivalent Z-forms of UQ(pl(L)) are introduced: one of these Z-forms is a version of the Kostant Z-form and the others are Lie algebra analogs of Rota and Stein's straightening formulae for the su