Results 21 to 30 of about 564,129 (313)

The Heine-Stieltjes correspondence and a new angular momentum projection for many-particle systems [PDF]

open access: yes, 2013
A new angular momentum projection for systems of particles with arbitrary spins is formulated based on the Heine-Stieltjes correspondence, which can be regarded as the solutions of the mean-field plus pairing model in the strong pairing interaction G ...
Draayer, Jerry P.   +3 more
core   +3 more sources

A new method for solving nonlinear systems of equations that is based on functional iterations

open access: yesOpen Physics, 2018
Regarding solving nonlinear equations systems, there is a main problem that is the number and complexity of the linear algebra operations, and the functional evaluations of the applied algorithm. In this paper, an alternative solution will be proposed by
Moreno Joaquín   +2 more
doaj   +1 more source

Zeros of Convex Combinations of Elementary Families of Harmonic Functions

open access: yesMathematics, 2023
Brilleslyper et al. investigated how the number of zeros of a one-parameter family of harmonic trinomials varies with a real parameter. Brooks and Lee obtained a similar theorem for an analogous family of harmonic trinomials with poles. In this paper, we
Jennifer Brooks   +4 more
doaj   +1 more source

REFINEMENT OF SOME BERNSTEIN TYPE INEQUALITIES FOR RATIONAL FUNCTIONS

open access: yesПроблемы анализа, 2022
In this paper, we establish some Bernstein-type inequalities for rational functions with prescribed poles. These results refine prior inequalities on rational functions and strengthen many well-known polynomial inequalities.
Idrees Qasim
doaj   +1 more source

Unnormalized differences between zeros of L-functions [PDF]

open access: yes, 2014
We study a subtle inequity in the distribution of unnormalized differences between imaginary parts of zeros of the Riemann zeta function. We establish a precise measure which explains the phenomenon, that the location of each Riemann zero is encoded in ...
Ford, Kevin, Zaharescu, Alexandru
core   +1 more source

Weak Boson Production Amplitude Zeros; Equalities of the Helicity Amplitudes [PDF]

open access: yes, 2001
We investigate the radiation amplitude zeros exhibited by many Standard Model amplitudes for triple weak gauge boson production processes. We show that $WZ\gamma$ production amplitudes have especially rich structure in terms of zeros, these amplitudes ...
A.D. Martin   +32 more
core   +3 more sources

Convexity of the zeros of some orthogonal polynomials and related functions

open access: yes, 2008
We study convexity properties of the zeros of some special functions that follow from the convexity theorem of Sturm. We prove results on the intervals of convexity for the zeros of Laguerre, Jacobi and ultraspherical polynomials, as well as functions ...
Ahmed   +17 more
core   +1 more source

Radiation zeros and scalar particles beyond the standard model [PDF]

open access: yes, 1998
Standard radiation zeros arise from the factorization properties of tree-level amplitudes involving a massless photon and can occur when all charged particles in the initial and final state have the same sign.
Alanakyan   +18 more
core   +2 more sources

Spectral Analysis of Certain Schrödinger Operators

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2012
The J-matrix method is extended to difference and q-difference operators and is applied to several explicit differential, difference, q-difference and second order Askey-Wilson type operators.
Mourad E.H. Ismail, Erik Koelink
doaj   +1 more source

Stability of Zeros for Sampled-Data Models with Triangle Sample and Hold Implemented by Zero-Order Hold

open access: yesMachines, 2022
This paper deals with the stability characteristics of zeros for sampled-data models with a class of triangle sample and hold realized by a traditional zero-order hold.
Minghui Ou   +6 more
doaj   +1 more source

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