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Mathematics of the USSR-Sbornik, 1989, Volume 63, Issue 2, Pages 305–317
DOI: https://doi.org/10.1070/SM1989v063n02ABEH003275
(Mi sm1703)
 

This article is cited in 5 scientific papers (total in 5 papers)

On the extension of varieties defined by quadratic equations

S. M. L'vovskii
References:
Abstract: One says that a smooth projective variety $V\subset\mathbf P^n$ extends $m$ steps nontrivially if there exists a projective variety $W\subset\mathbf P^{n+m}$ such that $V=W\cap\mathbf P^n$, where $W$ is not a cone, is nonsingular along $V$, and is transversal to $\mathbf P^n$.
In the paper it is proved, in particular, that if $V$ is given by quadratic equations, $\operatorname{dim}V\geqslant2$ and $h^1(V,\mathscr T_V(-1))=m<n$, then the variety $V$ extends nontrivially at most $m$ steps, and this bound is attained for certain varieties.
Bibliography: 16 titles.
Received: 09.09.1986
Bibliographic databases:
UDC: 513.6
MSC: Primary 14E25; Secondary 14F05, 14J26, 14M10
Language: English
Original paper language: Russian
Citation: S. M. L'vovskii, “On the extension of varieties defined by quadratic equations”, Math. USSR-Sb., 63:2 (1989), 305–317
Citation in format AMSBIB
\Bibitem{Lvo88}
\by S.~M.~L'vovskii
\paper On the extension of varieties defined by quadratic equations
\jour Math. USSR-Sb.
\yr 1989
\vol 63
\issue 2
\pages 305--317
\mathnet{http://mi.mathnet.ru//eng/sm1703}
\crossref{https://doi.org/10.1070/SM1989v063n02ABEH003275}
\mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=937643}
\zmath{https://zbmath.org/?q=an:0684.14013}
Linking options:
  • https://www.mathnet.ru/eng/sm1703
  • https://doi.org/10.1070/SM1989v063n02ABEH003275
  • https://www.mathnet.ru/eng/sm/v177/i3/p312
  • This publication is cited in the following 5 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Математический сборник (новая серия) - 1964–1988 Sbornik: Mathematics
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    Abstract page:422
    Russian version PDF:120
    English version PDF:20
    References:48
     
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