Results 51 to 60 of about 356 (177)

On laguerre geometry and generalized quadrangles

open access: yes, 2012
published_or_final_version ; Mathematics ; Master ; Master of ...
openaire   +2 more sources

Quantum Dust Cores of Black Holes and Their Quasi‐Normal Modes

open access: yesFortschritte der Physik, Volume 74, Issue 4, April 2026.
We investigate the quasi‐normal mode spectrum of a gravitationally collapsed ball of dust, considering both a linear and a refined parabolic effective mass function for the quantum core. Furthermore, we account for the quantum leakage of dust particles outside the horizon.
T. Bambagiotti   +4 more
wiley   +1 more source

A unified construction of finite geometries associated with q-clans in characteristic 2

open access: yes, 2003
Flocks of Laguerre planes, generalized quadrangles, translation planes, ovals, BLTsets, and the deep connections between them, are at the core of a developing theory in the area of geometry over finite fields.
Cherowittzo, W.   +2 more
core   +1 more source

Rayleigh and Raman optical activity using Laguerre-Gaussian twisted light

open access: yes, 2020
Chiral molecules scatter circularly-polarized light at different rates according to their handedness and that of the incident photons. A right-handed molecule, for example, scatters right-handed circularly-polarized light at a different rate to ...
Forbes, Kayn
core  

Key distribution patterns using tangent circle structures

open access: yes, 2004
The problem of key management in a communications network is of primary importance. A key distribution pattern is an incidence structure which provides a secure method of distributing keys in a large network reducing storage requirements.
RINALDI, Gloria
core   +1 more source

Incircular nets and confocal conics

open access: yes, 2017
We consider congruences of straight lines in a plane with the combinatorics of the square grid, with all elementary quadrilaterals possessing an incircle. It is shown that all the vertices of such nets (we call them incircular or IC-nets) lie on confocal
Bobenko, Alexander   +3 more
core   +1 more source

Third-harmonic generation microscopy with focus-engineered beams: a numerical study

open access: yes, 2008
International audienceWe use a vector field model to analyze third-harmonic generation (THG) from model geometries (interfaces, slabs, periodic structures) illuminated by Hermite-Gaussian (HG) and Laguerre-Gaussian (LG) beams focused by a high NA lens ...
Olivier, Nicolas, Beaurepaire, Emmanuel
core   +1 more source

Gaussian-Laguerre description of ultrasonic fields of transducer/lens systems and its applications to acousto-optic tomography

open access: yes, 1979
A novel theory for the mathematical representation of ultrasonic fields of planar transducers with cylindrical geometries is presented in this thesis.
Cavanagh, Eduardo
core  

Generation of axisymmetric modes in cylindrical kinematic mean-field dynamos of VKS type

open access: yes, 2010
International audienceIn an attempt to understand why the dominating magnetic field observed in the von-Kaacutermaacuten-sodium (VKS) dynamo experiment is axisymmetric, we investigate in the present article the ability of mean field models to generate ...
Stefani, F.   +17 more
core   +1 more source

Laguerre Geometry of Hypersurfaces in $\R^n$

open access: yes, 2006
Laguerre geometry of surfaces in $\R^3$ is given in the book of Blaschke [1], and have been studied by E.Musso and L.Nicolodi [5], [6], [7], B. Palmer [8] and other authors. In this paper we study Laguerre differential geometry of hypersurfaces in $\R^n$.
Li, Tongzhu, Wang, Changping
openaire   +2 more sources

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