Map Algebra
Mostrando 25-29 de 29 artigos, teses e dissertações.
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25. Álgebra de mapas e sua aplicações em sensoriamento remoto e geoprocessamento / Map algebra and its application in remote sensing and geoprocessing
O termo Álgebra de Mapas" e utilizado na literatura de Geoprocessamento e Sensoriamento Remoto para denotar o conjunto de operadores que manipulam campos geográficos (imagens, mapas temáticos e modelos numéricos de terreno). Este trabalho discute as diferentes questões envolvidas na concepção, implementação e uso dos operadores da Álgebra de Mapas.
Publicado em: 1997
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26. Capelli's theory, Koszul maps, and superalgebras.
The straightening laws for the enveloping algebra Ukappa(pl(L)) of the general linear Lie superalgebra of a finite dimensional Z2-graded vector space are investigated. An isomorphism Psi from the supersymmetric algebra Super[L L] of pl(L) to Ukappa(pl(L)) is introduced; the isomorphism Psi maps each bitableau of Super[L L] to the Young-Capelli bitableau of U
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27. Excision in algebraic K-theory and Karoubi's conjecture.
We prove that the property of excision in algebraic K-theory is for a Q-algebra A equivalent to the H-unitality of the latter. Our excision theorem, in particular, implies Karoubi's conjecture on the equality of algebraic and topological K-theory groups of stable C*-algebras. It also allows us to identify the algebraic K-theory of the symbol map in the theor
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28. Parametrizations of elliptic curves by Shimura curves and by classical modular curves
Fix an isogeny class 𝒜 of semistable elliptic curves over Q. The elements of 𝒜 have a common conductor N, which is a square-free positive integer. Let D be a divisor of N which is the product of an even number of primes—i.e., the discriminant of an indefinite quaternion algebra over Q. To D we associate a certain Shimura curve X0D(N/D), whose
The National Academy of Sciences of the USA.
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29. Generic Galois extensions
We define the notion of a generic Galois extension with group G over a field F. Let R be a communtative ring of the form F[x1,..., xn](1/s) and let S be a Galois extension of R with group G. Then S/R is generic for G over F if the following holds. Assume K/L is a Galois extension of fields with group G and such that L ⊇ F. Then there is an F algebra map f: