Berechnung des charakteristischen Exponenten der endlichen Hillschen Differentialgleichung durch Numerische Integration.
Bérenger/Maxwell with Discontinous Absorptions : Existence, Perfection, and No Loss
We analyse Bérenger’s split algorithm applied to the system version of the two dimensional wave equation with absorptions equal to Heaviside functions of , . The methods form the core of the analysis [11] for three dimensional Maxwell equations with absorptions not necessarily piecewise constant. The split problem is well posed, has no loss of derivatives (for divergence free data in the case of Maxwell), and is perfectly matched.
Berkowitz's algorithm and clow sequences.
Bernoulli's free-boundary problem, qualitative theory and numerical approximation.
Berührungsnomogramme mit Zykeln
Besov Regularity for Second Order Elliptic Boundary Value Problems with Variable Coefficients.
Bessel Transforms and Rational Extrapolation.
Best approximation and the numerical solution of partial differential equations with the tau method
Best Constants Occuring with the Modulus of Continuity in the Error Estimate for Spline Interpolants of Odd Degree on Equidistant Grids.
Best N-term approximation in electronic structure calculations. II. Jastrow factors
We present a novel application of best N-term approximation theory in the framework of electronic structure calculations. The paper focusses on the description of electron correlations within a Jastrow-type ansatz for the wavefunction. As a starting point we discuss certain natural assumptions on the asymptotic behaviour of two-particle correlation functions near electron-electron and electron-nuclear cusps. Based on Nitsche's characterization of best N-term approximation spaces , we prove...
Best N-term approximation in electronic structure calculations I. One-electron reduced density matrix
We discuss best N-term approximation spaces for one-electron wavefunctions and reduced density matrices ρ emerging from Hartree-Fock and density functional theory. The approximation spaces for anisotropic wavelet tensor product bases have been recently characterized by Nitsche in terms of tensor product Besov spaces. We have used the norm equivalence of these spaces to weighted spaces of wavelet coefficients to proof that both and ρ are in for all with . Our proof is based on the...
Best quadrature formula for a certain class of analytic functions
Bestimmung von Näherungen für die konforme Abbildung mit Hilfe von stationären Punktsystemen.
Beweis einiger Sätze über die analytische Ausgleichung. I
Beweis einiger Sätze über die analytische Ausgleichung. II
Beziehungen zwischen den Verfahren von Ritz und Bazley
BiCGstab() for linear equations involving unsymmetric matrices with complex spectrum.
Bifurcation analysis of the Hénon map.
Bifurcation in mathematical models of social and economic interaction
Bifurcation of solutions of separable parameterized equations into lines.