Results 1 to 10 of about 601 (55)

A systolic inequality with remainder in the real projective plane

open access: yesOpen Mathematics, 2020
The first paper in systolic geometry was published by Loewner’s student P. M. Pu over half a century ago. Pu proved an inequality relating the systole and the area of an arbitrary metric in the real projective plane.
Katz Mikhail G., Nowik Tahl
doaj   +1 more source

Existence Results for the Conformal Dirac–Einstein System

open access: yesAdvanced Nonlinear Studies, 2021
We consider the coupled system given by the first variation of the conformal Dirac–Einstein functional. We will show existence of solutions by means of perturbation methods.
Guidi Chiara   +2 more
doaj   +1 more source

Geometry of some twistor spaces of algebraic dimension one

open access: yesComplex Manifolds, 2015
It is shown that there exists a twistor space on the n-fold connected sum of complex projective planes nCP2, whose algebraic dimension is one and whose general fiber of the algebraic reduction is birational to an elliptic ruled surface or a K3 surface ...
Honda Nobuhiro
doaj   +1 more source

A Quartic Conformally Covariant Differential Operator for Arbitrary Pseudo-Riemannian Manifolds (Summary) [PDF]

open access: yes, 2008
This is the original manuscript dated March 9th 1983, typeset by the Editors for the Proceedings of the Midwest Geometry Conference 2007 held in memory of Thomas Branson.
Paneitz, Stephen M.
core   +4 more sources

A mixed volume from the anisotropic Riesz‐potential

open access: yesTransactions of the London Mathematical Society, Volume 5, Issue 1, Page 71-96, December 2018., 2018
Abstract As a geometrical understanding of the maximal gravitational potential in computational and mathematical physics, this paper investigates a mixed volume induced by the so‐called anisotropic Riesz‐potential and establishes a reverse Minkowski‐type inequality.
Shaoxiong Hou, Jie Xiao, Deping Ye
wiley   +1 more source

An Approach to Classical Quantum Field Theory Based on the Geometry of Locally Conformally Flat Space‐Time

open access: yesAdvances in Mathematical Physics, Volume 2017, Issue 1, 2017., 2017
This paper gives an introduction to certain classical physical theories described in the context of locally Minkowskian causal structures (LMCSs). For simplicity of exposition we consider LMCSs which have locally Euclidean topology (i.e., are manifolds) and hence are Möbius structures.
John Mashford, Özlem Yeşiltaş
wiley   +1 more source

Locally conformally Kähler structures on four-dimensional solvable Lie algebras

open access: yesComplex Manifolds, 2019
We classify and investigate locally conformally Kähler structures on four-dimensional solvable Lie algebras up to linear equivalence. As an application we can produce many examples in higher dimension, here including lcK structures on Oeljeklaus-Toma ...
Angella Daniele, Origlia Marcos
doaj   +1 more source

Translation to Bundle Operators [PDF]

open access: yes, 2007
We give explicit formulas for conformally invariant operators with leading term an $m$-th power of Laplacian on the product of spheres with the natural pseudo-Riemannian product metric for all $m$.Comment: This is a contribution to the Proceedings of the
Branson, Thomas P., Hong, Doojin
core   +5 more sources

Conformal Metrics with Constant Q-Curvature [PDF]

open access: yes, 2007
We consider the problem of varying conformally the metric of a four dimensional manifold in order to obtain constant $Q$-curvature. The problem is variational, and solutions are in general found as critical points of saddle type.
Malchiodi, Andrea
core   +8 more sources

SUFFICIENT CONDITIONS FOR THE EXISTENCE OF LIMITING CARLEMAN WEIGHTS

open access: yesForum of Mathematics, Sigma, 2017
In Angulo-Ardoy et al. [Anal. PDE, 9(3) (2016), 575–596], we found some necessary conditions for a Riemannian manifold to admit a local limiting Carleman weight (LCW), based on the Cotton–York tensor in dimension 3 and the Weyl tensor in dimension 4.
PABLO ANGULO-ARDOY   +2 more
doaj   +1 more source

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