Results 31 to 40 of about 85,527 (236)

On a theorem of H. Hopf

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1990
A simple proof of a theorem of H. Hopf [1], via Morse theory, is given.
Takis Sakkalis
doaj   +1 more source

The Fourth Fundamental Form IV of Dini-Type Helicoidal Hypersurface in the Four Dimensional Euclidean Space

open access: yesAxioms, 2021
We introduce the fourth fundamental form of a Dini-type helicoidal hypersurface in the four dimensional Euclidean space E4. We find the Gauss map of helicoidal hypersurface in E4. We obtain the characteristic polynomial of shape operator matrix. Then, we
Erhan Güler
doaj   +1 more source

Monoid Hypersurfaces

open access: yes, 2008
22 pages, 4 ...
Johansen, Pål Hermunn   +2 more
openaire   +2 more sources

Extrinsic and intrinsic curvatures in thermodynamic geometry

open access: yesPhysics Letters B, 2016
We investigate the intrinsic and extrinsic curvatures of a certain hypersurface in thermodynamic geometry of a physical system and show that they contain useful thermodynamic information.
Seyed Ali Hosseini Mansoori   +2 more
doaj   +1 more source

Parallel Hypersurfaces in 𝔼4 and Their Applications to Rotational Hypersurfaces

open access: yesMathematics
This study explores parallel hypersurfaces in four-dimensional Euclidean space E4, deriving explicit expressions for their Gaussian and mean curvatures in terms of the curvature functions of the base hypersurface. We identify conditions under which these
Sezgin Büyükkütük   +3 more
doaj   +1 more source

Normalization of Norden — Chakmazyan for distributions given on a hypersurface

open access: yesДифференциальная геометрия многообразий фигур, 2020
In the projective space, we continue to study a hypersurface with three strongly mutual distributions. For equipping distributions of a hypersurface, normalization in the sense of Norden — Chakmazyan is introduced internally.
N.A. Eliseeva
doaj   +1 more source

Singular Tropical Hypersurfaces [PDF]

open access: yesDiscrete & Computational Geometry, 2011
Several improvements.
Dickenstein, Alicia   +1 more
openaire   +4 more sources

Euclidean hypersurfaces isometric to spheres

open access: yesAIMS Mathematics
Given an immersed hypersurface $ M^{n} $ in the Euclidean space $ E^{n+1} $, the tangential component $\boldsymbol{\omega }$ of the position vector field of the hypersurface is called the basic vector field, and the smooth function of the normal ...
Yanlin Li   +3 more
doaj   +1 more source

Universal Entanglement and an Information‐Complete Quantum Theory

open access: yesAdvanced Physics Research, EarlyView.
This Perspective summarize an informationcomplete quantum theory which describes a fully quantum world without any classical systems and concepts. Here spacetime/gravity, having to be a physical quantum system, universally entangles matter (matter fermions and their gauge fields) as an indivisible trinity, and encodes information‐complete physical ...
Zeng‐Bing Chen
wiley   +1 more source

Bernstein-type theorems in hypersurfaces with constant mean curvature

open access: yesAnais da Academia Brasileira de Ciências, 2000
By using the nodal domains of some natural function arising in the study of hypersurfaces with constant mean curvature we obtain some Bernstein-type theorems.
MANFREDO P. DO CARMO, DETANG ZHOU
doaj   +1 more source

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