Results 231 to 240 of about 276,684 (327)
Polar Coordinates for the 3/2 Stochastic Volatility Model
Mathematical Finance, EarlyView.ABSTRACT The 3/2 stochastic volatility model is a continuous positive process s with a correlated infinitesimal variance process ν$\nu $. The exact definition is provided in the Introduction immediately below. By inspecting the geometry associated with this model, we discover an explicit smooth map ψ$ \psi $ from (R+)2$({\mathbb{R}}^+)^2 $ to the ...
Paul Nekoranik
wiley +1 more source
Khovanov Laplacian and Khovanov Dirac for knots and links. [PDF]
J Phys ComplexJones B, Wei GW.
europepmc +1 more source
On the photon–classical electromagnetic field relationship
Annals of the New York Academy of Sciences, EarlyView.Abstract This paper discusses how the two ways in which the wavefunction of a free‐propagating photon can be introduced—starting from the relativistic energy−momentum relationship or based on the electromagnetic field, in particular on Riemann–Silberstein vectors—are not entirely equivalent since they can lead to different consequences regarding photon
Daniela Dragoman
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Analyzing solitary wave solutions of the nonlinear Murray equation for blood flow in vessels with non-uniform wall properties. [PDF]
Sci RepInc M +6 more
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Does Less Education Harm Health? Evidence From a Natural Experiment in a Developing Country
Oxford Bulletin of Economics and Statistics, EarlyView.ABSTRACT We investigate the health outcome effects of a reduction in years of schooling in Egypt in 1988, a policy change that moves in the opposite direction in relation to the extant literature. We exploit this policy change as a natural experiment and employ a fuzzy regression discontinuity design to investigate a range of objectively measured ...
Islam Khalil +2 more
wiley +1 more source
New Torsional Surface Elastic Waves in Cylindrical Metamaterial Waveguides for Sensing Applications. [PDF]
Sensors (Basel)Kiełczyński P, Wieja K, Balcerzak A.
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Symbolic computation in algebra, geometry, and differential equations
Franz Winkler
openalex +1 more source
Differential Geometry on Hopf Algebras and Quantum Groups (Ph.D. Thesis)
, 1994 Paul Watts
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Deciphering the performance of different surface models for corneal topography
Ophthalmic and Physiological Optics, EarlyView.Abstract Purpose To study the performance of different corneal surface models to be used for ray tracing. Models based on geometric surfaces and polynomial fits were compared and the differences discussed. Methods For this simulation study, five characteristic generic surface configurations were generated: (A) perfect biconic, (B) decentred biconic ...
Achim Langenbucher +4 more
wiley +1 more source