Results 21 to 30 of about 206,636 (137)

Joint Centrality Distinguishes Optimal Leaders in Noisy Networks [PDF]

open access: yes, 2015
We study the performance of a network of agents tasked with tracking an external unknown signal in the presence of stochastic disturbances and under the condition that only a limited subset of agents, known as leaders, can measure the signal directly. We
Fitch, Katherine E.   +1 more
core   +1 more source

Leonard pairs and quantum algebra U(sl2)

open access: yesLinear Algebra and its Applications, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sang, Man, Gao, Suogang, Hou, Bo
openaire   +1 more source

Totally bipartite/abipartite Leonard pairs and Leonard triples of Bannai/ito type [PDF]

open access: yesThe Electronic Journal of Linear Algebra, 2013
This paper is about three classes of objects: Leonard pairs, Leonard triples, and the finite-dimensional irreducible modules for an algebra $\mathcal{A}$. Let $\K$ denote an algebraically closed field of characteristic zero. Let $V$ denote a vector space over $\K$ with finite positive dimension.
openaire   +2 more sources

The Universal Askey-Wilson Algebra and the Equitable Presentation of U_q(sl_2)

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2011
Around 1992 A. Zhedanov introduced the Askey-Wilson algebra AW(3). Recently we introduced a central extension Δ of AW(3) called the universal Askey-Wilson algebra. In this paper we discuss a connection between Δ and the quantum algebra U_q(sl_2).
Paul Terwilliger
doaj   +1 more source

The Universal Askey-Wilson Algebra

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2011
In 1992 A. Zhedanov introduced the Askey-Wilson algebra AW=AW(3) and used it to describe the Askey-Wilson polynomials. In this paper we introduce a central extension Δ of AW, obtained from AW by reinterpreting certain parameters as central elements in ...
Paul Terwilliger
doaj   +1 more source

Close Approach during Hard Binary--Binary Scattering

open access: yes, 1996
We report on an extensive series of numerical experiments of binary--binary scattering, analysing the cross--section for close approach during interactions for a range of hard binary parameters of interest in globular cluster cores.
Bacon, D., Davies, M. B., Sigurdsson, S.
core   +1 more source

How to recognize a Leonard pair [PDF]

open access: yesLinear and Multilinear Algebra, 2019
17 ...
openaire   +2 more sources

Leonard pairs from the equitable basis of sl2 [PDF]

open access: yesThe Electronic Journal of Linear Algebra, 2010
We construct Leonard pairs from finite-dimensional irreducible sl2-modules, using the equitable basis for sl2. We show that our construction yields all Leonard pairs of Racah, Hahn, dual Hahn, and Krawtchouk type, and no other types of Leonard pairs. 1. Introduction.
Hasan Alnajjar, Brian Curtin
openaire   +1 more source

Unregulated large language models produce medical device-like output

open access: yesnpj Digital Medicine
Large language models (LLMs) show considerable promise for clinical decision support (CDS) but none is currently authorized by the Food and Drug Administration (FDA) as a CDS device.
Gary E. Weissman   +2 more
doaj   +1 more source

Spectral Evolution of the Extraordinary Type IIn Supernova 2006gy

open access: yes, 2009
We present a detailed analysis of the extremely luminous Type IIn supernova SN2006gy using spectra obtained between days 36 and 237 after explosion. We derive the temporal evolution of the effective temperature, radius, expansion speeds, and bolometric ...
Agnoletto   +61 more
core   +1 more source

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