Results 31 to 40 of about 651,446 (197)
Banach spaces with projectional skeletons [PDF]
J. Math. Anal. Appl. 350 (2009), no. 2, 758--776, 2008 A projectional skeleton in a Banach space is a sigma-directed family of projections onto separable subspaces, covering the entire space. The class of Banach spaces with projectional skeletons is strictly larger than the class of Plichko spaces (i.e. Banach spaces with a countably norming Markushevich basis). We show that every space with a projectional
arxiv +1 more source
, 2012 A central problem in liaison theory is to decide whether every arithmetically Cohen-Macaulay subscheme of projective $n$-space can be linked by a finite number of arithmetically Gorenstein schemes to a complete intersection.
Migliore, Juan, Nagel, Uwe
core
Metrizations of Projective Spaces [PDF]
Proceedings of the American Mathematical Society, 1957 A two-dimensional G-space,1 in which the geodesic through two distinct points is unique, is either homeomorphic to the plane E2 and all geodesics are isometric to a straight line, or it is homeomorphic to the projective plane p2 and all geodesics are isometric to the same circle, see [1, ??10 and 31]. Two problems arise in either case: (1) To determine
openaire +2 more sources
The BGG Complex on Projective Space [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2011 We give a complete construction of the Bernstein-Gelfand-Gelfand complex on real or complex projective space using minimal ingredients.
Eastwood, M., Rod Gover, A.
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Invariants on Projective Space [PDF]
Journal of the American Mathematical Society, 1994 This article is concerned with the construction of invariant nonlinear differential operators for projective space, pn := P(R n+1) There is no loss in working at first on the projective n-sphere Sn, that is the space of rays in Rn+l. The consequences for pn will be explained at the end of the article.
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Explicit motion planning in digital projective product spaces [PDF]
arXiv, 2021 We introduce the digital projective product spaces based on Davis' projective product spaces. We determine an upper bound for the digital LS-category of the digital projective product spaces. In addition, we obtain an upper bound for the digital topological complexity of these spaces.
arxiv
Mapping spaces from projective spaces [PDF]
Homology, Homotopy and Applications, 2016 26 pages, 3 figures; the appendix in v3 is deleted since its argument was ...
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Isomorphism of Multiprojective Bundles and Projective Towers [PDF]
arXiv, 2023 We study when two projective bundles over two arbitrary smooth projective varieties of different dimensions can be isomorphic. We show that two multi-projective bundles (fibre product of projective bundles) over different projective spaces cannot be isomorphic, except in the trivial case.
arxiv
Contractive projections and operator spaces [PDF]
Comptes Rendus de l'Académie des Sciences - Series I - Mathematics, 2000 Parallel to the study of finite-dimensional Banach spaces, there is a growing interest in the corresponding local theory of operator spaces. We define a family of Hilbertian operator spaces H n k H_n^k , 1 ≤ k ≤ n 1\le k\le n , generalizing the row and column ...
Neal, Matthew, Russo, Bernard
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