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Browsing Mathematics by Title

Ramm, Alexander G.; Tran, Nhan Thanh
(World Academic Publishing, 2015)
Scalar wave scattering by many small particles of arbitrary shapes with impedance boundary condition is studied. The problem is solved asymptotically and numerically under the assumptions a d where k = 2 = is the ...

Albin, Nathan L.; Bruno, Oscar P.; Cheung, Theresa Y.; Cleveland, Robin O.
(2012)
On the basis of recently developed Fourier continuation (FC) methods and associated efficient parallelization techniques, this text introduces numerical algorithms that, due to very low dispersive errors, can accurately ...

Shult, Ernest
(2009)
A chamber system is a particular type of edgelabeled graph. We discuss when such chamber systems are or are not associated with a geometry, and when they are buildings. Buildings can give rise to
pointline geometries ...

Ramm, Alexander G.
(1998)

Ramm, Alexander G.
(2013)
The heat equation is considered in the complex system consisting of many small
bodies (particles) embedded in a given material. On the surfaces of the small bodies a Newtontype boundary condition is imposed. An equation ...

Turchin, Victor
(2010)
The paper describes a natural splitting in the rational homology and homotopy of the spaces of long knots. This decomposition presumably arises from the cabling maps in the same way as a natural decomposition in the homology ...

Diaconescu, DuiliuEmanuel; Hua, Zheng; Soibelman, Yan
(2012)
Hilbert scheme topological invariants of plane curve singularities are identified to framed threefold stable pair invariants. As a result, the conjecture of Oblomkov and Shende on HOMFLY polynomials of links of plane curve ...

Ramm, Alexander G.
(2011)

Ramm, Alexander G.
(American Institute of Physics, 2010)

Heck, Horst; Ramm, Alexander G.
(2009)
Obstacle identification problems for parabolic equations and systems are considered. Unique continuation property plays an important role in the arguments. These arguments are based on the idea which was first used in the ...

Ramm, Alexander G.
(2010)
Sufficient conditions are given for an implicit function theorem to hold.
The result is established by an application of the Dynamical Systems Method (DSM). It allows one to solve a class of nonlinear operator equations ...

Ramm, Alexander G.
(2009)

Gutman, S.; Ramm, Alexander G.
(2010)
We consider the inverse problem of the identification of a piecewiseconstant conductivity in a bar given the extra information of the heat flux through one end of the bar. Our theoretical results show that such an ...

Hoang, N. S.; Ramm, Alexander G.
(2009)

Ramm, Alexander G.
(1999)

Ramm, Alexander G.
(2002)

Ramm, Alexander G.
(Elsevier, 2015)
The inverse scattering problem on the halfline has been studied in the literature in detail. V. Marchenko presented the solution to this problem. In this paper, the invertibility of the steps of the inversion procedure ...

Ramm, Alexander G.
(2013)

Ramm, Alexander G.
(2014)

Indratno, Sapto W.; Ramm, Alexander G.
(2009)
A new method for inverting the Laplace transform from the real axis is formulated. This method is based on a quadrature formula. We assume that the unknown function f(t) is continuous with (known) compact support. An ...