Results 21 to 30 of about 3,688,282 (260)
The Q-matrix completion problem [PDF]
, 2009 A real n x n matrix is a Q-matrix if for every k = 1, 2, . . . , n the sum of all k x k principal minors is positive. A digraph D is said to have Q-completion if every partial Q-matrix specifying D can be completed to a Q-matrix.
DeAlba,, Luz +5 more
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Limit-point criteria for the matrix Sturm-Liouville operator and its powers [PDF]
Opuscula Mathematica, 2017 We consider matrix Sturm-Liouville operators generated by the formal expression \[l[y]=-(P(y^{\prime}-Ry))^{\prime}-R^*P(y^{\prime}-Ry)+Qy,\] in the space \(L^2_n(I)\), \(I:=[0, \infty)\). Let the matrix functions \(P:=P(x)\), \(Q:=Q(x)\) and \(R:=R(x)\)
Irina N. Braeutigam
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On Generalized p,q-Euler Matrix and Associated Sequence Spaces
Journal of Function Spaces, 2021 In this study, we introduce new BK-spaces bsr,tp,q and b∞r,tp,q derived by the domain of p,q-analogue Br,tp,q of the binomial matrix in the spaces ℓs and ℓ∞, respectively.
Taja Yaying +2 more
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A unitary matrix model for q-deformed Plancherel growth
Nuclear Physics B, 2021 In this paper we construct a unitary matrix model that captures the asymptotic growth of Young diagrams under q-deformed Plancherel measure. The matrix model is a q analog of Gross-Witten-Wadia (GWW) matrix model.
Suvankar Dutta +3 more
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Constructing and Validating a Q-Matrix for Cognitive Diagnostic Analysis of a Reading Comprehension Test Battery [PDF]
Journal of English Language Teaching and Learning, 2018 Of paramount importance in the study of cognitive diagnostic assessment (CDA) is the absence of tests developed for small-scale diagnostic purposes. Currently, much of the research carried out has been mainly on large-scale tests, e.g., TOEFL, MELAB ...
Mohammad Alavi, Fatemeh Ranjbaran
doaj
Abstract and Applied Analysis, 2013 The matrix equation ∑l=1uAlXBl+∑s=1vCsXTDs=F, which includes some frequently investigated matrix equations as its special cases, plays important roles in the system theory.
Ning Li, Qing-Wen Wang
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Counterexamples to Q-matrix conjectures [PDF]
, 1988 A matrix M ∈ Rn×n is in the class Q if for all q ∈ Rn there exist w, z ∈ Rn+ such that w − Mz = q, wTz = 0. It has been conjectured that it is possible to tell if a matrix M is in Q solely by considering the signs of subdeterminants of M.
Morris, Walter D.
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On quantum deformations of AdS3 × S3 × T4 and mirror duality
Journal of High Energy Physics, 2021 We consider various integrable two-parameter deformations of the AdS3 × S3 × T4 superstring with quantum group symmetry. Working on the string worldsheet in light-cone gauge and to quadratic order in fermions, we obtain their common massive tree-level ...
Fiona K. Seibold +2 more
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Matrix q-hypergeometric series [PDF]
, 1995 After extending the basic hypergeometric series to series with matrix coefficients, we apply them to the solution of q-difference-q-differential equations, and to the formulation of a versatile tool for producing generating functions and series-product ...
Yang, Kung-Wei
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