Results 31 to 40 of about 196,370 (247)

Topology of random real hypersurfaces [PDF]

open access: yes, 2014
These are notes of the mini-course I gave during the CIMPA summer school at Villa de Leyva, Colombia, in July $2014$. The subject was my joint work with Damien Gayet on the topology of random real hypersurfaces, restricting myself to the case of ...
Welschinger, Jean-Yves
core   +3 more sources

Discrepancy convergence for the drunkard's walk on the sphere [PDF]

open access: yes, 2000
We analyze the drunkard's walk on the unit sphere with step size theta and show that the walk converges in order constant/sin^2(theta) steps in the discrepancy metric. This is an application of techniques we develop for bounding the discrepancy of random
Su, Francis Edward
core   +4 more sources

Renormalization group properties in the conformal sector: towards perturbatively renormalizable quantum gravity

open access: yesJournal of High Energy Physics, 2018
The Wilsonian renormalization group (RG) requires Euclidean signature. The conformal factor of the metric then has a wrong-sign kinetic term, which has a profound effect on its RG properties.
Tim R. Morris
doaj   +1 more source

Spectral asymptotics for sub-Riemannian Laplacians. I: quantum ergodicity and quantum limits in the 3D contact case [PDF]

open access: yes, 2017
This is the first paper of a series in which we plan to study spectral asymptotics for sub-Riemannian Laplacians and to extend results that are classical in the Riemannian case concerning Weyl measures, quantum limits, quantum ergodicity, quasi-modes ...
de Verdière, Yves Colin   +2 more
core   +3 more sources

Logarithm laws and shrinking target properties [PDF]

open access: yes, 2008
We survey some of the recent developments in the study of logarithm laws and shrinking target properties for various families of dynamical systems. We discuss connections to geometry, diophantine approximation, and probability theory.Comment: This is a ...
Athreya, Jayadev S.
core   +1 more source

Radar orthogonality and radar length in Finsler and metric spacetime geometry [PDF]

open access: yes, 2014
The radar experiment connects the geometry of spacetime with an observers measurement of spatial length. We investigate the radar experiment on Finsler spacetimes which leads to a general definition of radar orthogonality and radar length. The directions
Pfeifer, Christian
core   +3 more sources

A novel low complexity local hybrid pseudo-SSIM-SATD distortion metric towards perceptual rate control [PDF]

open access: yes, 2013
The front-end block-based video encoder applies an Image Quality Assessment (IQA) as part of the distortion metric. Typically, the distortion metric applies uniform weighting for the absolute differences within a Sub-Macroblock (Sub-MB) at any given time.
Chang, Yoong Choon   +4 more
core   +1 more source

Towards a theory of area in homogeneous groups

open access: yes, 2018
A general approach to compute the spherical measure of submanifolds in homogeneous groups is provided. We focus our attention on the homogeneous tangent space, that is a suitable weighted algebraic expansion of the submanifold. This space plays a central
Magnani, Valentino
core   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

open access: yesFEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang   +9 more
wiley   +1 more source

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