norm convergence of rational operators on the unit circle.
Lagrange interpolation and entire functions
Lebesgue constant estimation in multidimensional Sobolev space.
Lebesgue constants in polynomial interpolation.
Linear abhängige Punktfunktionale bei zweidimensionalen Interpolations- und Approximationsproblemen.
Local behaviour of the derivative of a mid point cubic spline interpolator.
Local growth of Weierstrass -function and Whittaker-type derivative sampling.
Localized polynomial bases on the sphere.
Low-rank tensor representation of Slater-type and Hydrogen-like orbitals
The paper focuses on a low-rank tensor structured representation of Slater-type and Hydrogen-like orbital basis functions that can be used in electronic structure calculations. Standard packages use the Gaussian-type basis functions which allow us to analytically evaluate the necessary integrals. Slater-type and Hydrogen-like orbital functions are physically more appropriate, but they are not analytically integrable. A numerical integration is too expensive when using the standard discretization...