不能强迫我
发表于 2025-3-26 22:13:23
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accessory
发表于 2025-3-27 01:48:54
https://doi.org/10.1007/978-3-031-44839-3The field ℂ of complex numbers is taken as the ground field.
Muffle
发表于 2025-3-27 09:03:44
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拉开这车床
发表于 2025-3-27 09:30:29
Vladimir Latinovic,Raimundo C. BarretoSheaves on surfaces can be divided into two main classes: sheaves with deformations and sheaves without deformations. Among the latter there are sheaves that have niether global nor infinitesimal deformations, in other words, the group Ext.(.) is trivial. These sheaves, called rigid, are the subject of the present paper.
Brain-Imaging
发表于 2025-3-27 14:39:03
https://doi.org/10.1007/978-3-031-44839-3Let . be a plane algebraic curve in ℂ. and . (.) = 0 be an equation of . = deg .. We shall assume for simplicity that the polynomial . (.) does not contain multiple factors. The purpose of this paper is to describe some properties of the fundamental group π. (ℂ..).
ambivalence
发表于 2025-3-27 18:44:42
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斥责
发表于 2025-3-27 23:07:01
Njiruh Paul Nthakanio,Eucharia KenyaWe prove that only one cohomology group could be different from zero for those exceptional vector bundles on a quadric surface which appear to be symmetric ones twisted by a line bundle, and that this is not true for ext-groups between two such bundles.
胶状
发表于 2025-3-28 02:35:40
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记成蚂蚁
发表于 2025-3-28 09:11:43
Njiruh Paul Nthakanio,Eucharia KenyaLet . be a smooth simple connected algebraic surface over ℂ, Pic (.) be the group of classes of divisors, . be the light cone, . be the Lobachevski space and . be closed subset of .. of rays of polarizations.
famine
发表于 2025-3-28 11:54:52
Three Problems on an Exceptional Domain,We wish to consider three problems of an algebraico-geometric nature connected with hermitian symmetric tube domains, and in particular with the 27-dimensional tube domain .. on which a certain real form of .. acts.