Results 41 to 50 of about 13,435 (197)

Equivalence of solutions between the four-dimensional novel and regularized EGB theories in a cylindrically symmetric spacetime

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
Recently, a novel four-dimensional Einstein–Gauss–Bonnet (EGB) theory was presented to bypass the Lovelock’s theorem and to give nontrivial effects on the four-dimensional local gravity.
Zi-Chao Lin   +4 more
doaj   +1 more source

Radiating black hole solutions in Einstein-Gauss-Bonnet gravity

open access: yes, 2005
In this paper, we find some new exact solutions to the Einstein-Gauss-Bonnet equations. First, we prove a theorem which allows us to find a large family of solutions to the Einstein-Gauss-Bonnet gravity in $n$-dimensions.
Alfredo E. Dominguez   +7 more
core   +1 more source

Intrinsic curvature of curves and surfaces and a Gauss-Bonnet theorem in the Heisenberg group [PDF]

open access: yes, 2016
We use a Riemannnian approximation scheme to define a notion of intrinsic Gaussian curvature for a Euclidean C2 -smooth surface in the Heisenberg group H away from characteristic points, and a notion of intrinsic signed geodesic curvature for Euclidean ...
Balogh, Zoltan M.   +2 more
core   +1 more source

The Gauss-Bonnet theorem for Riemannian polyhedra [PDF]

open access: yesTransactions of the American Mathematical Society, 1943
\{This is a joint review for Zbl 0060.38102 -- 0060.38106. \} The classical Gauss-Bonnet formula expresses the curvatura integral of a curved polygon on a surface in \(E_3\) in terms of angles of the polygon and the integral of geodesic curvatures of its edges.
Allendoerfer, Carl B., Weil, André
openaire   +2 more sources

Einstein-Gauss-Bonnet gravity in 4-dimensional space-time

open access: yes, 2020
In this Letter we present a general covariant modified theory of gravity in $D\!=\!4$ space-time dimensions which propagates only the massless graviton and bypasses the Lovelock's theorem.
Glavan, Dražen, Lin, Chunshan
core   +1 more source

The hyperbolic Gauss-Bonnet type theorem [PDF]

open access: yes, 2002
We show that the Gauss-Bonnet type theorem holds for the hyperbolic Gauss-Kronecker curvature of a closed orientable even dimensional hypersurface in hyperbolic space.
Izumiya, S, Pei, D, Romero-Fuster, M. C
core   +1 more source

Bending Energy Schemes for Discrete‐Spring‐Network Structural Modelling of Red Blood Cells

open access: yesInternational Journal for Numerical Methods in Biomedical Engineering, Volume 41, Issue 11, November 2025.
This research investigated three bending energy schemes for discrete‐spring‐network structural modelling termed bending energy scheme (BES) A, B and C. Flat and enclosed membrane test cases were presented, and predictions using the schemes were compared.
Osayomwanbor Ehi‐Egharevba   +2 more
wiley   +1 more source

The Gauss–Bonnet theorem

open access: yesColumbia Journal of Undergraduate Mathematics
The Gauss–Bonnet theorem is a crowning result of surface theory that gives a fundamental connection between geometry and topology. Roughly speaking, geometry refers to the “local” properties—lengths, angles, curvature— of some fixed object, while topology seeks to identify the “global” properties that are unchanged by a continuous deformation, such as ...
openaire   +3 more sources

On Gauss-Bonnet theorem

open access: yesPublications de l'Institut Mathematique, 2012
A very simple proof of the Gauss-Bonnet theorem is given in invariant form, i.e., independent of the coordinate system of a surface.
openaire   +3 more sources

A lower bound on volumes of end‐periodic mapping tori

open access: yesJournal of Topology, Volume 18, Issue 3, September 2025.
Abstract We provide a lower bound on the volume of the compactified mapping torus of a strongly irreducible end‐periodic homeomorphism f:S→S$f: S \rightarrow S$. This result, together with work of Field, Kim, Leininger, and Loving [J. Topol. 16 (2023), no.
Elizabeth Field   +3 more
wiley   +1 more source

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