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Modelirovanie i Analiz Informatsionnykh Sistem, 2015, Volume 22, Number 2, Pages 209–218
(Mi mais436)
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This article is cited in 1 scientific paper (total in 1 paper)
Uniformity of vector bundles of finite rank on complete intersections of finite codimension in a linear ind-Grassmannian
S. M. Yermakova P. G. Demidov Yaroslavl State University, Sovetskaya str., 14, Yaroslavl, 150000, Russia
Abstract:
A linear projective ind-variety X is called 1-connected if any two points on it can be connected
by a chain of lines l1,l2,...,lk in X,
such that li intersects li+1.
A linear projective ind-variety X is called 2-connected if
any point of X lies on a projective line in X and for any two lines l and l′ in X there is a chain of lines l=l1,l2,...,lk=l′, such that any pair (li,li+1) is contained in a projective plane P2 in X.
In this work we study an ind-variety X that is a complete intersection in the linear ind-Grassmannian G=lim→G(km,nm). By definition, X
is an intersection of G with a finite number
of ind-hypersufaces Yi=lim→Yi,m,m≥1, of fixed degrees di, i=1,...,l, in the space P∞, in which the ind-Grassmannian G is embedded by Plücker.
One can deduce from work [17] that X is 1-connected. Generalising this result
we prove that X is 2-connected. We deduce from this property that any vector bundle E of finite rank on X is uniform, i. e. the restriction of E to all projective lines
in X has the same splitting type.
The motiavtion of this work is to extend theorems of Barth–Van de Ven–Tjurin–Sato type to
complete intersections of finite codimension in ind-Grassmannians.
Received: 25.11.2014
Citation:
S. M. Yermakova, “Uniformity of vector bundles of finite rank on complete intersections of finite codimension in a linear ind-Grassmannian”, Model. Anal. Inform. Sist., 22:2 (2015), 209–218
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https://www.mathnet.ru/eng/mais436 https://www.mathnet.ru/eng/mais/v22/i2/p209
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