Results 21 to 30 of about 13,708 (218)

On Boundedness of Maximal Operators Associated with Hypersurfaces

open access: yesСовременная математика: Фундаментальные направления, 2018
In this paper, we obtain the criterion of boundedness of maximal operators associated with smooth hypersurfaces. Also we compute the exact value of the boundedness index of such operators associated with arbitrary convex analytic hypersurfaces in the ...
I A Ikromov, S E Usmanov
doaj   +1 more source

On Minimal Hypersurfaces of a Unit Sphere

open access: yesMathematics, 2021
Minimal compact hypersurface in the unit sphere Sn+1 having squared length of shape operator A22), provided the scalar curvature τ is a constant on integral curves of w.
Amira Ishan   +3 more
doaj   +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

On Bernstein’s Problem of Complete Parabolic Hypersurfaces in Warped Products

open access: yesAdvances in Mathematical Physics, 2023
We study constant mean curvature hypersurfaces constructed over the fiber Mn of warped products I×fMn. In this setting, assuming that the sign of the angle function does not changed along the hypersurfaces, we infer the uniqueness of such hypersurfaces ...
Ning Zhang, Zhangsheng Zhu
doaj   +1 more source

Nonrational hypersurfaces [PDF]

open access: yesJournal of the American Mathematical Society, 1995
In this very interesting paper there are developed some general ideas to obtain examples of Fano varieties, non-rational and not even ruled. -- Complete proofs, here only sketched, will appear elsewhere. The results are valid for ``very general'' hypersurfaces, that is they hold for hypersurfaces corresponding to a point in the complement of countably ...
openaire   +2 more sources

Irreducibility of Hypersurfaces [PDF]

open access: yesCommunications in Algebra, 2009
Given a polynomial P in several variables over an algebraically closed field, we show that except in some special cases that we fully describe, if one coefficient is allowed to vary, then the polynomial is irreducible for all but at most deg(P)^2-1 values of the coefficient.
Bodin, Arnaud   +2 more
openaire   +2 more sources

On Einstein null hypersurfaces of $(LCS)_{n+2}$-space forms [PDF]

open access: yes, 2019
We show that ascreen null hypersurfaces of an (n+2)-dimensional Lorentzian concircular structure (LCS)_{n+2}-manifold admits an induced Ricci tensor. We, therefore, prove, under some geometric conditions, that an Einstein ascreen null hypersurface is ...
Ssekajja, Samuel
core   +1 more source

A characterization of totally $\eta$-umbilical real hypersurfaces and ruled real hypersurfaces of a complex space form [PDF]

open access: yes, 1993
summary:We give a characterization of totally $\eta $-umbilical real hypersurfaces and ruled real hypersurfaces of a complex space form in terms of totally umbilical condition for the holomorphic distribution on real hypersurfaces.
Ahn Seong-Soo   +6 more
core   +1 more source

Lightlike Hypersurfaces of a Semi-Riemannian Product Manifold and Quarter-Symmetric Nonmetric Connections

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
We study lightlike hypersurfaces of a semi-Riemannian product manifold. We introduce a class of lightlike hypersurfaces called screen semi-invariant lightlike hypersurfaces and radical anti-invariant lightlike hypersurfaces.
Erol Kılıç, Oğuzhan Bahadır
doaj   +1 more source

On the Minimal Hypersurfaces

open access: yesCommunications, Faculty Of Science, University of Ankara Series A1Mathematics and Statistics, 1983
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Karliğa, B., Hacisalihoğlu, H. H.
openaire   +3 more sources

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