Results 21 to 30 of about 42,946 (260)

Hypersurface-deformation algebroids and effective spacetime models [PDF]

open access: yes, 2016
In canonical gravity, covariance is implemented by brackets of hypersurface-deformation generators forming a Lie algebroid. Lie-algebroid morphisms, therefore, allow one to relate different versions of the brackets that correspond to the same spacetime ...
M. Bojowald   +3 more
semanticscholar   +1 more source

Cayley hypersurfaces

open access: yesProceedings of the Steklov Institute of Mathematics, 2006
We exhibit a family of homogeneous hypersurfaces in affine space, one in each dimension, generalising the Cayley surface.
Eastwood, Michael, Ezhov, V
openaire   +5 more sources

Hypersurfaces of cohomogeneity one and hypersurfaces of revolution

open access: yesDifferential Geometry and its Applications, 2004
A Riemannian manifold \(M\) equipped with a Lie group \(G\) of isometries has cohomogeneity \(1\) whenever the principal \(G\)-orbits are of codimension \(1\). Here, the authors deal with such complete cohomogeneity-\(1\) hypersurfaces \(M\) in \(\mathbb R^{n+1}\), \(n\geq 3\), which are unflat at infinity. He proves the following results: (1) If \(G\)
Mercuri, Francesco   +1 more
openaire   +2 more sources

On the rationality of generating functions of certain hypersurfaces over finite fields

open access: yesAIMS Mathematics, 2023
Let $ a, n $ be positive integers and let $ p $ be a prime number. Let $ \mathbb F_q $ be the finite field with $ q = p^a $ elements. Let $ \{a_i\}_{i = 1}^\infty $ be an arbitrary given infinite sequence of elements in $ \mathbb F_q $ and $ a_1\neq 0 $.
Lin Han, Guangyan Zhu, Zongbing Lin
doaj   +1 more source

Conformal hypersurface geometry via a boundary Loewner–Nirenberg–Yamabe problem [PDF]

open access: yesCommunications in analysis and geometry, 2015
We develop a new approach to the conformal geometry of embedded hypersurfaces by treating them as conformal infinities of conformally compact manifolds. This involves the Loewner--Nirenberg-type problem of finding on the interior a metric that is both
A. Gover, A. Waldron
semanticscholar   +1 more source

Homaloidal hypersurfaces and hypersurfaces with vanishing Hessian

open access: yesAdvances in Mathematics, 2008
56 pages. v2: Some material added in section 1; minor changes.
CILIBERTO C, RUSSO, Francesco, SIMIS, A.
openaire   +4 more sources

Homological mirror symmetry for hypersurface cusp singularities [PDF]

open access: yesSelecta Mathematica, 2015
We study versions of homological mirror symmetry for hypersurface cusp singularities and the three hypersurface simple elliptic singularities. We show that the Milnor fibres of each of these carries a distinguished Lefschetz fibration; its derived ...
Ailsa Keating
semanticscholar   +1 more source

Determinantal hypersurfaces. [PDF]

open access: yesMichigan Mathematical Journal, 2000
29 pages, Plain TeX, with a new Appendix by F.-O ...
openaire   +4 more sources

Holomorphic Curves into Algebraic Varieties Intersecting Moving Hypersurface Targets [PDF]

open access: yesActa Mathematica Vietnamica, 2015
In Ru (Ann. Math. 169 , 255–267 2009 ), Min Ru proved a second main theorem for algebraically nondegenerate holomorphic curves in complex projective varieties intersecting fixed hypersurface targets.
G. Dethloff, T. Tan
semanticscholar   +1 more source

Min-max hypersurface in manifold of positive Ricci curvature [PDF]

open access: yes, 2015
In this paper, we study the shape of the min-max minimal hypersurface produced by Almgren-Pitts-Schoen-Simon \cite{AF62, AF65, P81, SS81} in a Riemannian manifold $(M^{n+1}, g)$ of positive Ricci curvature for all dimensions. The min-max hypersurface has
Xin Zhou
semanticscholar   +1 more source

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