Results 1 to 10 of about 9,096 (136)

Planar interpolation by second order spiral splines [PDF]

open access: yesMethodsX, 2020
Second order spiral splines are C2 unit-speed planar curves that can be used to interpolate a finite list of points in the Euclidean plane. A fast algorithm is given for interpolation when the data comes from a strictly convex planar curve.
Lyle Noakes
doaj   +2 more sources

Magnetoencephalography Source Connectivity Pipeline Reveals Long-Range Connectivity in Audio-Visual Integration. [PDF]

open access: yesEur J Neurosci
This study presents a pipeline for analysing source‐level brain connectivity in MEG data, focusing on audio‐visual integration in native Chinese speakers and a control group. Results indicate a crucial role of Delta band connectivity, with native speakers showing distinct pathways between prefrontal and occipital, and also interhemispheric brain areas,
Bornfleth H   +6 more
europepmc   +2 more sources

Cyclic tridiagonal pairs, higher order Onsager algebras and orthogonal polynomials [PDF]

open access: yesLinear Algebra and its Applications, 2016
The concept of cyclic tridiagonal pairs is introduced, and explicit examples are given. For a fairly general class of cyclic tridiagonal pairs with cyclicity N, we associate a pair of `divided polynomials'. The properties of this pair generalize the ones
Baseilhac, P.   +2 more
core   +8 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

Hidden Symmetries of Stochastic Models [PDF]

open access: yes, 2007
In the matrix product states approach to $n$ species diffusion processes the stationary probability distribution is expressed as a matrix product state with respect to a quadratic algebra determined by the dynamics of the process.
Aneva, Boyka
core   +5 more sources

Self-dual Leonard pairs

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   +1 more source

Differential qd algorithm with shifts for rank-structured matrices [PDF]

open access: yes, 2012
Although QR iterations dominate in eigenvalue computations, there are several important cases when alternative LR-type algorithms may be preferable.
Zhlobich, Pavel
core   +1 more source

Exact spectrum of the XXZ open spin chain from the q-Onsager algebra representation theory [PDF]

open access: yes, 2007
The transfer matrix of the XXZ open spin-1/2 chain with general integrable boundary conditions and generic anisotropy parameter (q is not a root of unity and |q|=1) is diagonalized using the representation theory of the q-Onsager algebra.
Baseilhac, P., Koizumi, K.
core   +4 more sources

A design procedure for overlapped guaranteed cost controllers [PDF]

open access: yes, 2008
© 2008 the authors. This work has been accepted to IFAC for publication under a Creative Commons Licence CC-BY-NC-NDIn this paper a quadratic guaranteed cost control problem for a class of linear continuous-time state-delay systems with norm-bounded ...
Palacios Quiñonero, Francisco   +2 more
core   +1 more source

Approximated structured pseudospectra [PDF]

open access: yes, 2016
Pseudospectra and structured pseudospectra are important tools for the analysis of matrices. Their computation, however, can be very demanding for all but small-matrices.
Alam   +22 more
core   +2 more sources

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