Results 231 to 240 of about 3,098,507 (269)
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Stable Densities

Theory of Probability & Its Applications, 1994
Summary: This paper shows that a uniform expression is possible for stable densities (in all cases except \(p = 1\), \(\gamma = 0\) in terms of the incomplete hypergeometric function \(_ 1 G_ 0(\alpha,\beta,z)\) defined by \[ _ 1G_ 0(\alpha,\beta,z)=\begin{cases} {1\over\Gamma(\alpha)}\sum^\infty_{n=0} {\Gamma(\alpha + n\beta)\over n!} z^ n, & \text{if
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Estimating densities, quantiles, quantile densities and density quantiles

Annals of the Institute of Statistical Mathematics, 1992
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Density Operator, Density Matrix

2011
The density matrix is especially suited for a description of an arbitrary (pure or mixed) polarization state (differently from a wave function). With it averages and expectation values as well as statistical distributions of measurable quantities can be described.
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Valence density functionals

Physical Review Letters, 1992
Since the inception of Density Functional Theory (DFT) the remarkable success of the Local Density Approximation (LDA) has been difficult to improve in a systematic way. Originally Hohenberg, Kohn and Sham introduced LDA as the first term in a gradient expansion of the exchange-correlation energy functional[1].
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Density and Density Matrices in Density Functional Theory

1990
Publisher Summary This chapter discusses density and density matrices in density functional theory. It also discusses particle number and order; fundamental Hilbert spaces; matrices and restricted operators; local and nonlocal operators; equidensity orbitals and n representability; and negative consequences of a finite model.
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Relative Density -> Eco-Density

2009
Non se ne può fare a meno. La sua assenza produce di solito il vuoto, che per quando rarefatto è sempre in qualche modo denso di qualcosa. Eppure, per quanto essenziale, la densità è anche sfuggente come gran parte delle caratteristiche qualificative che descrivono proprietà delle sostanze di cui sono fatti i corpi.
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Incidence Density is no Density

Scandinavian Journal of Social Medicine, 1993
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Density Matrices and Density Operators

1996
As was repeatedly seen in the last chapter, for computing most of the usual matrix elements only a few of the many coordinates of an N-particle wavefunction are used, where due to the symmetry properties it is irrelevant which ones. Density matrices are a tool to extract the relevant information out of such monstrous constructs as are N-particle ...
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