Results 41 to 50 of about 613,974 (314)

The Topological Entropy Conjecture

open access: yesMathematics, 2021
For a compact Hausdorff space X, let J be the ordered set associated with the set of all finite open covers of X such that there exists nJ, where nJ is the dimension of X associated with ∂. Therefore, we have Hˇp(X;Z), where 0≤p≤n=nJ.
Lvlin Luo
doaj   +1 more source

New Multicritical Random Matrix Ensembles [PDF]

open access: yes, 2002
In this paper we construct a class of random matrix ensembles labelled by a real parameter $\alpha \in (0,1)$, whose eigenvalue density near zero behaves like $|x|^\alpha$.
Akemann   +22 more
core   +2 more sources

Eigenvalues and Holonomy

open access: yesInternational Mathematics Research Notices, 2002
We estimate the eigenvalues of connection Laplacians in terms of the non-triviality of the holonomy.
Gilles Carron   +2 more
openaire   +3 more sources

A New Family of Chaotic Systems with Different Closed Curve Equilibrium

open access: yesMathematics, 2019
Chaotic systems with hidden attractors, infinite number of equilibrium points and different closed curve equilibrium have received much attention in the past six years.
Xinhe Zhu, Wei-Shih Du
doaj   +1 more source

The fine structure of spectral properties for random correlation matrices: an application to financial markets [PDF]

open access: yes, 2011
We study some properties of eigenvalue spectra of financial correlation matrices. In particular, we investigate the nature of the large eigenvalue bulks which are observed empirically, and which have often been regarded as a consequence of the supposedly
Alfarano, S., Livan, G., Scalas, E.
core   +5 more sources

Numerical construction of structured matrices with given eigenvalues

open access: yesSpecial Matrices, 2019
We consider a structured inverse eigenvalue problem in which the eigenvalues of a real symmetric matrix are specified and selected entries may be constrained to take specific numerical values or to be nonzero.
Sutton Brian D.
doaj   +1 more source

A Shift Selection Strategy for Parallel Shift-invert Spectrum Slicing in Symmetric Self-consistent Eigenvalue Computation [PDF]

open access: yes, 2020
© 2020 ACM. The central importance of large-scale eigenvalue problems in scientific computation necessitates the development of massively parallel algorithms for their solution.
Beckman, PG, Williams-Young, DB, Yang, C
core   +1 more source

Eigenvalues and the diameter of graphs [PDF]

open access: yesLinear and Multilinear Algebra, 1995
Using eigenvalue interlacing and Chebyshev polynomials we find upper bounds for the diameter of regular and bipartite biregular graphs in terms of their eigenvalues. This improves results of Chung and Delorme and Sole. The same method gives upper bounds for the number of vertices at a given minimum distance from a given vertex set.
van Dam, E.R., Haemers, W.H.
openaire   +8 more sources

On Trees as Star Complements in Regular Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2020
Let G be a connected r-regular graph (r ---gt--- 3) of order n with a tree of order t as a star complement for an eigenvalue µ ∉ {−1, 0}. It is shown that n ≤ 1/2 (r + 1)t − 2. Equality holds when G is the complement of the Clebsch graph (with µ = 1, r =
Rowlinson Peter
doaj   +1 more source

On Eigenvalue spacings for the 1-D Anderson model with singular site distribution

open access: yes, 2013
We study eigenvalue spacings and local eigenvalue statistics for 1D lattice Schrodinger operators with Holder regular potential, obtaining a version of Minami's inequality and Poisson statistics for the local eigenvalue spacings.
C. Shubin   +4 more
core   +1 more source

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