Results 11 to 20 of about 33,245 (97)

The Euler and Springer numbers as moment sequences

open access: yes, 2018
I study the sequences of Euler and Springer numbers from the point of view of the classical moment problem.Comment: LaTeX2e, 30 pages. Version 2 contains some small clarifications suggested by a referee. Version 3 contains new footnotes 9 and 10.
Sokal, Alan D.
core   +1 more source

One particle spectral function and analytic continuation for many-body implementation in the EMTO method

open access: yes, 2012
We investigate one of the most common analytic continuation techniques in condensed matter physics, namely the Pad\'{e} approximant. Aspects concerning its implementation in the exact muffin-tin orbitals (EMTO) method are scrutinized with special regard ...
Chioncel, L., Vitos, L., Östlin, A.
core   +1 more source

Pseudo-factorials, elliptic functions, and continued fractions

open access: yes, 2009
This study presents miscellaneous properties of pseudo-factorials, which are numbers whose recurrence relation is a twisted form of that of usual factorials.
Bacher, Roland, Flajolet, Philippe
core   +3 more sources

Cosmic Reionisation by Stellar Sources: Population III Stars [PDF]

open access: yes, 2004
We combine fast radiative transfer calculations with high resolution hydrodynamical simulations to study an epoch of early hydrogen reionisation by primordial stellar sources at redshifts ...
Aaron Sokasian   +81 more
core   +1 more source

On the smoothings of non-normal isolated surface singularities

open access: yes, 2015
We show that isolated surface singularities which are non-normal may have Milnor fibers which are non-diffeomorphic to those of their normalizations. Therefore, non-normal isolated singularities enrich the collection of Stein fillings of links of normal ...
Popescu-Pampu, Patrick
core   +1 more source

Growth rate for the expected value of a generalized random Fibonacci sequence [PDF]

open access: yes, 2008
A random Fibonacci sequence is defined by the relation g_n = | g_{n-1} +/- g_{n-2} |, where the +/- sign is chosen by tossing a balanced coin for each n. We generalize these sequences to the case when the coin is unbalanced (denoting by p the probability
Benoît Rittaud   +7 more
core   +4 more sources

Numerical Evidence that the Perturbation Expansion for a Non-Hermitian $\mathcal{PT}$-Symmetric Hamiltonian is Stieltjes

open access: yes, 2000
Recently, several studies of non-Hermitian Hamiltonians having $\mathcal{PT}$ symmetry have been conducted. Most striking about these complex Hamiltonians is how closely their properties resemble those of conventional Hermitian Hamiltonians.
Andrianov   +59 more
core   +1 more source

Do Information and Communication Technologies Empower Female Workers? Firm-Level Evidence from Viet Nam [PDF]

open access: yes, 2018
This paper studies the effects of firms’ investments in information and communication technologies (ICT) on their demand for female and skilled workers. Using the gradual liberalization of the broadband Internet sector across provinces from 2006 to 2009 ...
Chun, Natalie, Tang, Heiwai
core   +2 more sources

Electromagnetic properties of non-Dirac particles with rest spin 1/2

open access: yes, 2010
We resolve a number of questions related to an analytic description of electromagnetic form factors of non-Dirac particles with the rest spin 1/2. We find the general structure of a matrix antisymmetric tensor operator. We obtain two recurrence relations
A. A. Komar   +22 more
core   +1 more source

Transmission Properties of the oscillating delta-function potential

open access: yes, 2001
We derive an exact expression for the transmission amplitude of a particle moving through a harmonically driven delta-function potential by using the method of continued-fractions within the framework of Floquet theory.
B. Kónya   +21 more
core   +1 more source

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