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Questions related from Herbert H H Homeier
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 5,504 24 View
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 5,350 0 View
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 9,204 19 View
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 8,755 7 View
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 7,920 8 View
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 5,357 2 View