Results 101 to 110 of about 26,527 (250)
Sobre la convergencia en el Grassmaniano
Selecciones Matemáticas, 2020 In this paper, we present a characterization of the convergence on the n-th order Grassmannian that permits us to show in a direct way that this set is compact and every vector bundle is measurable.
Helmuth Villavicencio
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On the dimension of orthogonal projections of self‐similar measures
Journal of the London Mathematical Society, Volume 112, Issue 1, July 2025.Abstract Let ν$\nu$ be a self‐similar measure on Rd$\mathbb {R}^d$, d⩾2$d\geqslant 2$, and let π$\pi$ be an orthogonal projection onto a k$k$‐dimensional subspace. We formulate a criterion on the action of the group generated by the orthogonal parts of the iterated function system on π$\pi$, and show that it ensures that the dimension of πν$\pi \nu$ is
Amir Algom, Pablo Shmerkin
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The existence of subspace designs
Proceedings of the London Mathematical Society, Volume 131, Issue 1, July 2025.Abstract We prove the existence of subspace designs with any given parameters, provided that the dimension of the underlying space is sufficiently large in terms of the other parameters of the design and satisfies the obvious necessary divisibility conditions. This settles an open problem from the 1970s.
Peter Keevash +2 more
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Interference Alignment with Quantized Grassmannian Feedback in the\n K-user Constant MIMO Interference Channel [PDF]
, 2012 Mohsen Rezaee, Maxime Guillaud
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Journal of High Energy Physics, 2017 In this paper we consider tree-level gauge invariant off-shell amplitudes (Wilson line form factors) in N = 4 $$ \mathcal{N}=4 $$ SYM. For the off-shell amplitudes with one leg off-shell we present a conjecture for their Grassmannian integral ...
L. V. Bork, A. I. Onishchenko
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Singularities of Affine Schubert Varieties
Symmetry, Integrability and Geometry: Methods and Applications, 2009 This paper studies the singularities of affine Schubert varieties in the affine Grassmannian (of type A_l^{(1)}). For two classes of affine Schubert varieties, we determine the singular loci; and for one class, we also determine explicitly the tangent ...
Jochen Kuttler, Venkatramani Lakshmibai
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, 2008 This paper discusses the family of distributions on the Grassmannian of the linear span of r central gaussian vectors parametrized by the covariance matrix. Our main result is an existence and uniqueness criterion for the maximum likelihood estimate of a sample.
Auderset, Claude +2 more
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Symmetry, Integrability and Geometry: Methods and Applications, 2011 In this parer, q-deformed oscillator for pseudo-Hermitian systems is investigated and pseudo-Hermitian appropriate coherent and squeezed states are studied. Also, some basic properties of these states is surveyed.
Yusef Maleki
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Journal of High Energy Physics, 2017 In this paper we consider tree-level gauge invariant off-shell amplitudes (Wilson line form factors) in N = 4 $$ \mathcal{N}=4 $$ SYM with arbitrary number of off-shell gluons or equivalently Wilson line operator insertions.
L.V. Bork, A.I. Onishchenko
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Perverse Sheaves on Grassmannians [PDF]
Canadian Journal of Mathematics, 2002 AbstractWe compute the category of perverse sheaves on Hermitian symmetric spaces in types A and D, constructible with respect to the Schubert stratification. The calculation is microlocal, and uses the action of the Borel group to study the geometry of the conormal variety Λ.
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