Results 161 to 170 of about 91,366 (255)

Singular hypersurfaces and thin shells in general relativity [PDF]

, 1967
W. Israel
openalex   +1 more source

Hypersurfaces that are not stably rational

Journal of the American Mathematical Society, 2015
We show that a wide class of hypersurfaces in all dimensions are not stably rational. Namely, for all d ≥ 2 ⌈ ( n + 2 ) / 3 ⌉ d\geq 2\lceil (n+2)/3\rceil and n ≥ 3 n\geq 3 , a very general complex ...
openaire   +3 more sources

Hopf-type hypersurfaces on Hermite-like manifolds [PDF]

arXiv
The object of this paper is to introduce new classes of hypersurfaces of almost product-like statistical manifolds. The main properties and relations on $K-$para contact, para cosymplectic, para Sasakian and conformal hypersurfaces are obtained. Some examples of these hypersurfaces are presented.
arxiv  

Singular hypersurfaces in general relativity

, 1957
A. H. Taub
openalex   +1 more source

Certain hypersurfaces of an odd dimensional sphere [PDF]

, 1967
Masafumi Okumura
openalex   +1 more source

Classification of Rank-One Submanifolds. [PDF]

Results Math, 2023
Raffaelli M.
europepmc   +1 more source

Almost contact structures induced on hypersurfaces in complex and almost complex spaces [PDF]

, 1965
Kentaro Yano, Shigeru Ishihara
openalex   +1 more source

Sums of Squares on Hypersurfaces

Results in Mathematics
We show that the Pythagoras number of rings of type $\mathbb{R}[x,y, \sqrt{f(x,y)}]$ is infinite, provided that the polynomial $f(x,y)$ satisfies some mild conditions.
Kacper Błachut, Tomasz Kowalczyk
openaire   +3 more sources

Erratum to "Bernstein-type theorems in hypersurfaces with constant mean curvature" [An Acad Bras Cienc 72(2000): 301-310]

Anais da Academia Brasileira de Ciências, 2001
An erratum to Lemma 2.1 in Do Carmo and Zhou (2000) is presented.
CARMO MANFREDO P. DO, ZHOU DETANG
doaj  

A note about almost contact metric hypersurfaces axioms for almost Hermitian manifolds

Дифференциальная геометрия многообразий фигур
From 1950s, it is known that an almost contact metric structure is in­duced on an arbitrary oriented hypersurface in an almost Hermitian mani­fold. In accordance with the definition, an almost Hermitian manifold satisfies the axiom of almost contact ...
A. Abu-Saleem, M. B. Banaru, G. A. Banaru   +2 more
doaj   +1 more source