Results 11 to 20 of about 5,655,450 (249)

Inverse problem for Dirac systems with locally square-summable potentials and rectangular Weyl functions [PDF]

open access: yes, 2014
Inverse problem for Dirac systems with locally square summable potentials and rectangular Weyl functions is solved. For that purpose we use a new result on the linear similarity between operators from a subclass of triangular integral operators and the ...
Alexander Sakhnovich, Weyl Functions
core   +1 more source

Quantitative mixing results and inner functions [PDF]

open access: yes, 2006
19 pages, no figures.-- MSC2000 codes: 30D05, 30D50, 37A05, 37A25, 37F10, 28D05, 11K55.MR#: MR2262783 (2007j:37003)Zbl#: Zbl 1125.30019We study in this paper estimates on the size of the sets of points which are well approximated by orbits of other ...
Fernández, José L.   +2 more
core   +3 more sources

Spin structure functions [PDF]

open access: yes, 1999
We review the study of the internal spin structure of the proton and neutron. High-energy scattering of polarized leptons by polarized protons, neutrons, and deuterons provides a measurement of the nucleon spin structure functions.
Hughes, E. W., Voss, R.
core   +1 more source

E-Orbit Functions [PDF]

open access: yes, 2008
We review and further develop the theory of $E$-orbit functions. They are functions on the Euclidean space $E_n$ obtained from the multivariate exponential function by symmetrization by means of an even part $W_{e}$ of a Weyl group $W$, corresponding to ...
Klimyk, Anatoliy U., Patera, Jiri
core   +4 more sources

Analysis techniques for complex-field radiation pattern measurements [PDF]

open access: yes, 2018
Complex field measurements are increasingly becoming the standard for state-of-the-art astronomical instrumentation. Complex field measurements have been used to characterize a suite of ground, airborne, and space-based heterodyne receiver missions [1], [
Born   +9 more
core   +3 more sources

Direct and Inverse Results for Multipoint Hermite-Pade Approximants [PDF]

open access: yes, 2018
Given a system of functions f = (f1, . . . , fd) analytic on a neighborhood of some compact subset E of the complex plane, we give necessary and sufficient conditions for the convergence with geometric rate of the common denominators of multipoint ...
Bosuwan, N.   +2 more
core   +2 more sources

Hilbert Functions of Filtered Modules [PDF]

open access: yes, 2009
In this presentation we shall deal with some aspects of the theory of Hilbert functions of modules over local rings, and we intend to guide the reader along one of the possible routes through the last three decades of progress in this area of dynamic ...
Rossi, M. E., Valla, G.
core   +1 more source

Connectivity Functions and Polymatroids

open access: yes, 2016
A {\em connectivity function on} a set $E$ is a function $\lambda:2^E\rightarrow \mathbb R$ such that $\lambda(\emptyset)=0$, that $\lambda(X)=\lambda(E-X)$ for all $X\subseteq E$ and that $\lambda(X\cap Y)+\lambda(X\cup Y)\leq \lambda(X)+\lambda(Y)$ for
Jowett, Susan   +2 more
core   +1 more source

Holomorphic Functions and polynomial ideals on Banach spaces [PDF]

open access: yes, 2010
Given $\u$ a multiplicative sequence of polynomial ideals, we consider the associated algebra of holomorphic functions of bounded type, $H_{b\u}(E)$. We prove that, under very natural conditions verified by many usual classes of polynomials, the spectrum
Carando, Daniel   +2 more
core   +2 more sources

Quantum Global Strings and Their Correlation Functions

open access: yes, 1998
A full quantum description of global vortex strings is presented in the framework of a pure Higgs system with a broken global U(1) symmetry in 3+1D. An explicit expression for the string creation operator is obtained, both in terms of the Higgs field and
E. C. MARINO   +4 more
core   +2 more sources

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