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On the structure of some complexes of $m$-dimensional planes of the projective space $P^n$ containing a finite number of torses
I. V. Bubyakin North-Eastern Federal University named after M. K. Ammosov
Abstract:
This paper is devoted to the differential geometry of $\rho$-dimensional complexes $C^\rho$ of $m$-dimensional planes in the projective space $P^n$ containing a finite number of torses. We find a necessary condition under which the complex $C^\rho$ contains a finite number of torses. We clarify the structure of $\rho$-dimensional complexes $C^\rho$ for which all torses belonging to the complex $C^\rho$ have one common characteristic $(m+1)$-dimensional plane that touches the torse along an $m$-dimensional generator. Such complexes are denoted by $C^\rho(1)$. Also, we determine the image of complexes $C^\rho(1)$ in the $(m+1)(n-m)$-dimensional algebraic variety $\Omega(m,n)$ of the space $P^N$, where $N=\binom{m+1}{n+1}-1$, which is the image of the manifold $G(m,n)$ of $m$-dimensional planes of the projective space $P^n$ under the Grassmann mappping.
Keywords:
Grassmannian, complex of multidimensional planes, Segre manifold.
Citation:
I. V. Bubyakin, “On the structure of some complexes of $m$-dimensional planes of the projective space $P^n$ containing a finite number of torses”, Proceedings of the International Conference "Classical and Modern Geometry"
Dedicated to the 100th Anniversary of the Birth of Professor Vyacheslav Timofeevich Bazylev.
Moscow, April 22-25, 2019. Part 2, Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 180, VINITI, Moscow, 2020, 9–16
Linking options:
https://www.mathnet.ru/eng/into635 https://www.mathnet.ru/eng/into/v180/p9
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Abstract page: | 108 | Full-text PDF : | 66 | References: | 15 |
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