Results 151 to 160 of about 36,312 (298)

Vector bundles of finite rank on complete intersections of finite codimension in ind-Grassmannians

Complex Manifolds, 2015
In this article we establish an analogue of the Barth-Van de Ven-Tyurin-Sato theorem.We prove that a finite rank vector bundle on a complete intersection of finite codimension in a linear ind-Grassmannian is isomorphic to a direct sum of line bundles.
Ermakova Svetlana
doaj   +1 more source

An identity involving symmetric polynomials and the geometry of Lagrangian Grassmannians [PDF]

arXiv, 2016
We first prove an identity involving symmetric polynomials. This identity leads us into exploring the geometry of Lagrangian Grassmannians. As an insight applications, we obtain a formula for the integral over the Lagrangian Grassmannian of a characteristic class of the tautological sub-bundle.
arxiv  

Restricted Grassmannian permutations [PDF]

Enumerative Combinatorics and Applications, 2022
Juan B. Gil, Jessica A. Tomasko
doaj   +1 more source

Para-Grassmannian Coherent and Squeezed States for Pseudo-Hermitian q-Oscillator and their Entanglement

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
doaj   +1 more source

Equidistant codes in the Grassmannian

Discrete Applied Mathematics, 2015
Equidistant codes over vector spaces are considered. For $k$-dimensional subspaces over a large vector space the largest code is always a sunflower. We present several simple constructions for such codes which might produce the largest non-sunflower codes.
Netanel Raviv, Tuvi Etzion
openaire   +3 more sources

Grassmannian and flag sigma models on interval: phase structure and L-dependence

Journal of High Energy Physics, 2019
We discuss the two-dimensional Grassmannian SU(N)/S(U(N − 2) × U(2)) and the flag SU(N )/S(U(N − 2) × U(1) × U(1)) sigma models on a finite interval and construct analytical solutions of gap equations in the large-N limit.
D. Pavshinkin
doaj   +1 more source

Linear embeddings of grassmannians and ind-grassmannians [PDF]

arXiv
By a grassmannian we understand a usual complex grassmannian or possibly an orthogonal or symplectic grassmannian. We classify, with few exceptions, linear embeddings of grassmannians into larger grassmannians, where the linearity requirement is the condition that the embedding induces an isomorphism on Picard groups.
arxiv  

Projections of Grassmannians of lines and characterization of Veronese varieties [PDF]

arXiv, 1997
We characterize the double Veronese embedding of P^n as the only variety that, under certain general conditions, can be isomorphically projected from the Grassmannian of lines in P^{2n+1} to the Grassmannian of lines in P^{n+1}.
arxiv  

Drinfeld Moduli Schemes and Infinite Grassmannians [PDF]

arXiv, 1997
The aim of this paper is to construct an immersion of the Drinfeld moduli schemes in a finite product of infinite Grassmannians, such that they will be locally closed subschemes of these Grassmannians which represent a kind of flag varieties.
arxiv  

Polygon spaces and Grassmannians

, 1996
We study the moduli spaces of polygons in R^2 and R^3, identifying them with subquotients of 2-Grassmannians using a symplectic version of the Gel'fand-MacPherson correspondence. We show that the bending flows defined by Kapovich-Millson arise as a reduction of the Gel'fand-Cetlin system on the Grassmannian, and with these determine the pentagon and ...
Hausmann, Jean-Claude, Knutson, Allen
openaire   +3 more sources