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On Involutions in the Weyl Group and B-Orbit Closures in the Orthogonal Case
P. 331–355.
Язык:
английский
В книге
Vol. 330. , Switzerland: Birkhauser/Springer, 2019.
Mikhail Ignatev, Mikhail Venchakov, Expositiones Mathematicae 2025 Vol. 43 No. 3 Article 125656
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Широков Д. С., International Journal of Geometric Methods in Modern Physics 2026 Vol. 23 No. 5 Article 2540031
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Широков Д. С., Advances in Applied Clifford Algebras 2024 Vol. 34 Article 23
In this paper, we present a natural implementation of singular value decomposition (SVD) and polar decomposition of an arbitrary multivector in nondegenerate real and complexified Clifford geometric algebras of arbitrary dimension and signature. The new theorems involve only operations in geometric algebras and do not involve matrix operations. We naturally define these and other related ...
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Широков Д. С., Advances in Applied Clifford Algebras 2019 Vol. 29 No. 50 P. 1–12
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Бочкарев М. А., Ignatyev M. V., Shevchenko A. A., Journal of Algebra 2016 Vol. 465 No. November P. 259–286
We study tangent cones to Schubert subvarieties of the flag variety of a complex reductive group G. Let T be a maximal torus of G, B be a Borel subgroup of G containing T, Φ be the root system of G with respect to T, W be the Weyl group of Φ, and F=G/B be ...
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Широков Д. С., P-Adic Numbers, Ultrametric Analysis, and Applications 2011 Vol. 3 No. 3 P. 212–218
In this article we consider Clifford algebras over the field of real numbers of finite dimension. We define the operation of Hermitian conjugation for the elements of Clifford algebra. This operation allows us to define the structure of Euclidian space on the Clifford algebra. We consider pseudo-orthogonal group and its subgroups – special pseudo-orthogonal, orthochronous, ...
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Широков Д. С., Advances in Applied Clifford Algebras 2015 Vol. 25 No. 3 P. 707–718
In this paper we prove isomorphisms between 5 Lie groups (of arbitrary dimension and fixed signatures) in Clifford algebra and classical matrix Lie groups - symplectic, orthogonal and linear groups. Also we obtain isomorphisms of corresponding Lie algebras. ...
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Широков Д. С., Advances in Applied Clifford Algebras 2015 Vol. 25 No. 1 P. 227–244
We formulate generalizations of Pauli’s theorem on the cases of real and complex Clifford algebras of even and odd dimensions. We give analogues of these theorems in matrix formalism. Using these theorems we present an algorithm for computing elements of spin groups that correspond to elements of orthogonal groups as double cover. ...
Добавлено: 11 марта 2015 г.