Results 151 to 160 of about 4,903,854 (193)

Asymptotic Density and Computability

Russian Mathematics, 2021
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I. Batyrshin
semanticscholar   +2 more sources

On the Asymptotic Density of Sets of Integers

Journal of the London Mathematical Society, 1976
where a,, and b, equal 0 or 1, the set A (resp. B) appearing as the set of those n such that a,, = 1 (resp. b, = 1). It seems a rather difficult problem to describe explicitly the structure of all such direct factors, although the theorem demonstrated in [5] and our present Theorem 1 shed some light on the situation by proving the existence of their ...
B. Saffari
semanticscholar   +3 more sources

On asymptotic behavior of density functional theory.

The Journal of Chemical Physics, 2013
The performance of several previously proposed as well as of some novel approaches for correcting the asymptotic behavior of electron densities in density functional theory (DFT) is evaluated. The comparisons are made for molecular properties that are known to be sensitive to the asymptotic behavior of densities such as polarizabilities, energies of ...
W. Cencek, K. Szalewicz
semanticscholar   +3 more sources

Generalized Asymptotic Density

American Journal of Mathematics, 1953
R. Buck
semanticscholar   +3 more sources

ASYMPTOTICS OF SPECTRAL DENSITY ESTIMATES

Econometric Theory, 2009
We consider nonparametric estimation of spectral densities of stationary processes, a fundamental problem in spectral analysis of time series. Under natural and easily verifiable conditions, we obtain consistency and asymptotic normality of spectral density estimates.
Liu, Weidong, Wu, Wei Biao
openaire   +2 more sources

Asymptotic Density of Eigenvalue Clusters for the Perturbed Landau Hamiltonian

, 2011
We consider the Landau Hamiltonian (i.e. the 2D Schrödinger operator with constant magnetic field) perturbed by an electric potential V which decays sufficiently fast at infinity.
A. Pushnitski, G. Raikov, C. Villegas-Blas   +2 more
semanticscholar   +1 more source

Microstructural fracture mechanics: Stored energy density at fatigue cracks

, 2021
This paper addresses the mechanistic drivers of short fatigue crack growth using theory, computational crystal plasticity and experimental test and characterisation. The asymptotic theory shows that the crack tip stored energy density is non-singular and
Yilun Xu, Weifeng Wan, F. Dunne
semanticscholar   +1 more source