Results 1 to 10 of about 10,437 (228)

Self-dual Leonard pairs [PDF]

open access: yesSpecial Matrices, 2019
Let F denote a field and let V denote a vector space over F with finite positive dimension. Consider a pair A, A* of diagonalizable F-linear maps on V, each of which acts on an eigenbasis for the other one in an irreducible tridiagonal fashion.
Nomura Kazumasa, Terwilliger Paul
doaj   +4 more sources

Fables of scarcity in IP

open access: yesFrontiers in Research Metrics and Analytics, 2023
In this chapter, I use methods drawn from literary analysis to bear on artificial scarcity and explore how literary and legal storytelling engages in scarcity mongering.
Zahr K. Said
doaj   +1 more source

LEONARD PAIRS AND THE ASKEY–WILSON RELATIONS [PDF]

open access: yesJournal of Algebra and Its Applications, 2004
Let K denote a field and let V denote a vector space over K with finite positive dimension. We consider an ordered pair of linear transformations A:V→V and A*:V→V which satisfy the following two properties:(i) There exists a basis for V with respect to which the matrix representing A is irreducible tridiagonal and the matrix representing A* is diagonal.
Terwilliger, Paul, Vidunas, Raimundas
openaire   +2 more sources

Compatibility and companions for Leonard pairs

open access: yesThe Electronic Journal of Linear Algebra, 2022
In this paper, we introduce the concepts of compatibility and companion for Leonard pairs. These concepts are roughly described as follows. Let $\mathbb{F}$ denote a field, and let $V$ denote a vector space over $\mathbb{F}$ with finite positive dimension.A Leonard pair on $V$ is an ordered pair of diagonalizable $\mathbb{F}$-linear maps $A : V \to V ...
Kazumasa Nomura, Paul Terwilliger
openaire   +3 more sources

A Linear Map Acts as a Leonard Pair with Each of the Generators of Usl2

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2020
Let ℱ denote an algebraically closed field with a characteristic not two. Fix an integer d≥3; let x, y, and z be the equitable basis of sl2 over ℱ. Let V denote an irreducible sl2-module with dimension d+1; let A∈EndV. In this paper, we show that if each
Hasan Alnajjar
doaj   +1 more source

Balanced Leonard pairs

open access: yesLinear Algebra and its Applications, 2007
20 ...
Nomura, Kazumasa, Terwilliger, Paul
openaire   +2 more sources

Leonard pairs, spin models, and distance-regular graphs [PDF]

open access: yesJournal of Combinatorial Theory, Series A, 2021
A Leonard pair is an ordered pair of diagonalizable linear maps on a finite-dimensional vector space, that each act on an eigenbasis for the other one in an irreducible tridiagonal fashion. In the present paper we consider a type of Leonard pair, said to have spin. The notion of a spin model was introduced by V.F.R.
Nomura, Kazumasa, Terwilliger, Paul
openaire   +3 more sources

Diagonalization of the Heun-Askey-Wilson operator, Leonard pairs and the algebraic Bethe ansatz

open access: yesNuclear Physics B, 2019
An operator of Heun-Askey-Wilson type is diagonalized within the framework of the algebraic Bethe ansatz using the theory of Leonard pairs. For different specializations and the generic case, the corresponding eigenstates are constructed in the form of ...
Pascal Baseilhac, Rodrigo A. Pimenta
doaj   +1 more source

Affine transformations of a Leonard pair [PDF]

open access: yesThe Electronic Journal of Linear Algebra, 2007
Let $K$ denote a field and let $V$ denote a vector space over $K$ with finite positive dimension. We consider an ordered pair of linear transformations $A : V \to V$ and $A^* : V \to V$ that satisfy (i) and (ii) below: (i) There exists a basis for $V$ with respect to which the matrix representing $A$ is irreducible tridiagonal and the matrix ...
Nomura, Kazumasa, Terwilliger, Paul
openaire   +2 more sources

PENGARUH PENDEKATAN TIDWELL DAN BACHUS DALAM LAYANAN KONSELING KELOMPOK TERHADAP AGRESIVITAS PESERTA DIDIK KELAS VIII PAGI SMPN 9 TAMBUN

open access: yesInsight: Jurnal Bimbingan dan Konseling, 2017
Tujuan penelitian ini adalah untuk mengetahui apakah terdapat pengaruh pada penerapan pendekatan Tidwell dan Bachus dalam layanan konseling kelompok terhadap agresivitas peserta didik di kelas VIII Pagi SMP Negeri 9 Tambun.
Istianah Istianah   +2 more
doaj   +1 more source

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