Concept

Resolution of singularities

Publications associées (37)

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Optical coherence tomography - principles and applications

Theo Lasser

There have been three basic approaches to optical tomography since the early 1980s: diffraction tomography, diffuse optical tomography and optical coherence tomography (OCT). Optical techniques are of particular importance in the medical field, because the ...

2003

Uniform semiclassical wave function for coherent two- dimensional electron flow

Jiri Vanicek

We find a uniform semiclassical (SC) wave function describing coherent branched flow through a two-dimensional electron gas (2DEG), a phenomenon recently discovered by direct imaging of the current using scanned probed microscopy [M.A. Topinka, B.J. LeRoy, ...

2003

On Finite-Dimensional Term Structure Models

Damir Filipovic

In this paper we provide the characterization of all finite-dimensional Heath-Jarrow-Morton models that admit arbitrary initial yield curves. It is well known that affine term structure models with time-dependent coef- ficients (such as the Hull-White exte ...

Princeton University2002

Accurate solution of the volume integral equation for high-permittivity scatterers

Olivier Martin

We present a formalism based on the method of moment to solve the volume integral equation using tetrahedral (3-D) and triangular (2-D) elements. We introduce a regularization scheme to handle the strong singularity of the Green's tensor. This regularizati ...

Institute of Electrical and Electronics Engineers2000

MEPHISTO spectromicroscope reaches 20 nm lateral resolution

Giorgio Margaritondo, Luca Perfetti

The recently described tests of the synchrotron imaging photoelectron spectromicroscope MEPHISTO (Microscope a Emission de PHotoelectrons par Illumination Synchrotronique de Type Onduleur) were complemented by further resolution improvements and tests, whi ...

1999

Prescribing curvature on compact surfaces with conical singularities

Marc Troyanov

We study the Berger-Nirenberg problem on surfaces with conical singularities, i.e, we discuss conditions under which a function on a Riemann surface is the Gaussian curvature of some conformal metric with a prescribed set of singularities of conical types. ...

1991

Metrics of constant curvature on a sphere with two conical singularities

Marc Troyanov

Using methods based on (complex) projective geometry we give a classification of all metrics with constant curvature on a sphere with two conical singularities. ...

Springer-Verlag1989