Herbert H H Homeier

6 Questions 169 Answers 0 Followers

Questions related from Herbert H H Homeier

How can smooth random potentials be constructed?

Such smooth random potentials V(x) might useful in modelling disordered systems. Here, V is a real smooth function on IRd (d a natural number) in the simplest case. Of interest would be the...

06 June 2016 5,502 24 View

What are your recommendations for Open Access Journals in Numerical Mathematics?

What are your recommendations for choosing an Open Access journal in numerical mathematics, based on your own experience? The main points of interest seem to me a) Scientific quality b)...

01 January 2016 5,348 0 View

If you integrate spherically, your H_k(r) has a "step" at r=0 in the center?

H(r-r_0) has derivative 0.5*\delta(r_0). Only for the "unphysical" value r_0=0 (no step, since there are no nonnegative r0 some term that diverges with k. This corresponds to the infinity in your...

01 January 2013 9,202 19 View

Are there known extensions of Richardson extrapolation to multivariate settings?

If yes, are the corresponding algorithms and programs available? Multivariate Richardson extrapolation: can anyone elaborate on the status, related algorithms, and programs?

11 November 2012 8,752 7 View

Is physics still an important driving force for developing new mathematics?

Physical intuition often provides interesting approaches that then need some mathematical foundation, e.g. the Dirac delta function and the theory of Distributions. Is this type of...

01 January 1970 7,918 8 View

What do you consider as frontiers or open questions of density functional theory?

I list some suggestions of possible answers: * Size extensitivity and/or Size consistency of DFT method * Perturbation approaches for DFT methods * DFT methods that scale linearly with...

01 January 1970 5,355 2 View