Showing 421 - 440 results of 710 for search '"matrix theory"', query time: 0.22s Refine Results
  1. 421

    Reduced neutron widths in the nuclear data ensemble: Experiment andtheory do not agree by Koehler P.E.

    Published 2010-03-01
    “…I have analyzed reduced neutron widths (Γ0n) for the subset of 1245 resonances in the nuclear data ensemble (NDE) for which they have been reported. Random matrix theory (RMT) predicts for the Gaussian orthogonal ensemble (GOE) that these widths should follow a χ2 distribution having one degree of freedom (ν = 1) - the Porter Thomas (PT) distribution. …”
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    Article
  2. 422

    The estimates of diagonally dominant degree and eigenvalues inclusion regions for the Schur complement of block diagonally dominant matrices by Wang Feng, Sun Deshu

    Published 2015-11-01
    “…The theory of Schur complement plays an important role in many fields, such as matrix theory and control theory. In this paper, applying the properties of Schur complement, some new estimates of diagonally dominant degree on the Schur complement of I(II)-block strictly diagonally dominant matrices and I(II)-block strictly doubly diagonally dominant matrices are obtained, which improve some relative results in Liu [Linear Algebra Appl. 435(2011) 3085-3100]. …”
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  3. 423

    Distributed Averaging Problems of Agriculture Picking Multi-Robot Systems via Sampled Control by Fengying Ma, Hui Yao, Mingjun Du, Peng Ji, Xiaoan Si

    Published 2022-07-01
    “…With the algebraic graph theory concepts and the matrix theory, a distributed protocol is proposed based on the nearest sampled neighbor information. …”
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    Article
  4. 424

    Analyticity constraints bound the decay of the spectral form factor by Pablo Martinez-Azcona, Aurélia Chenu

    Published 2022-11-01
    “…The results are illustrated in systems with regular, chaotic, and tunable dynamics, namely the single-particle harmonic oscillator, the many-particle Calogero-Sutherland model, an ensemble from random matrix theory, and the quantum kicked top. The relation of the derived bound with other known bounds, including quantum speed limits, is discussed.…”
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  5. 425

    Ranking and synchronization from pairwise measurements via SVD by d'Aspremont, A, Cucuringu, M, Tyagi, H

    Published 2021
    “…We provide a detailed theoretical analysis in terms of robustness against both sampling sparsity and noise perturbations with outliers, using results from matrix perturbation and random matrix theory. Our theoretical findings are complemented by a detailed set of numerical experiments on both synthetic and real data, showcasing the competitiveness of our proposed algorithms with other state-of-the-art methods.…”
    Journal article
  6. 426

    Reactivity of complex communities can be more important than stability by Yang, Y, Coyte, KZ, Foster, KR, Li, A

    Published 2023
    “…Here, we challenge this focus, showing that short-term dynamics can be a better predictor of outcomes for complex ecosystems. Using random matrix theory, we study how complex ecosystems behave immediately after small perturbations. …”
    Journal article
  7. 427

    SPONGE: A generalized eigenproblem for clustering signed networks by Cucuringu, M, Davies, P, Glielmo, A, Tyagi, H

    Published 2019
    “…We provide theoretical guarantees for our approach in the setting of a signed stochastic block model, by leveraging tools from matrix perturbation theory and random matrix theory. An extensive set of numerical experiments on both synthetic and real data shows that our approach compares favorably with state-of-the-art methods for signed clustering, especially for large number of clusters and sparse measurement graphs.…”
    Conference item
  8. 428

    Emergence of world-stock-market network by Saeedian, M, Jamali, T, Kamali, M, Bayani, H, Yasseri, T, Jafari, G

    Published 2017
    “…Towards this end, we analyze the cross-correlation matrix of the indices of these forty markets using Random Matrix Theory (RMT). We find the degree of collective behavior among the markets and the share of each market in their structural formation. …”
    Journal article
  9. 429

    The loss surfaces of neural networks with general activation functions by Baskerville, N, Keating, J, Mezzadri, F, Najnudel, J

    Published 2021
    “…In doing so, we chart a new path through the spin glass complexity calculations using supersymmetric methods in random matrix theory which may prove useful in other contexts. …”
    Journal article
  10. 430

    On the moments of characteristic polynomials by Jonnadula, B, Keating, J, Mezzadri, F

    Published 2022
    “…We calculate the moments of the characteristic polynomials of N × N matrices drawn from the Hermitian ensembles of Random Matrix Theory, at a position t in the bulk of the spectrum, as a series expansion in powers of t. …”
    Journal article
  11. 431

    Spectral statistics of molecular resonances in erbium isotopes: How chaotic are they? by Mur-Petit, J, Molina, R

    Published 2015
    “…We calculate different independent statistical properties to check their degree of agreement with random matrix theory (RMT), and analyze if they are consistent with the possibility of having missing resonances. …”
    Journal article
  12. 432

    May's instability in large economies by Moran, J, Bouchaud, J-P

    Published 2019
    “…Relying on results from random matrix theory, we argue that such networks generically become dysfunctional when their size increases, when the heterogeneity between firms becomes too strong, or when substitutability of their production inputs is reduced. …”
    Journal article
  13. 433

    Dynamics of NYSE correlation structure during global crisis in 2008: evidence from complex network analysis by Djauhari, M. A., Lee, G. S.

    Published 2016
    “…To understand its behavior, random matrix theory and/or graph theory are/is usually used. …”
    Conference or Workshop Item
  14. 434

    Electrodynamics of planar reflecting structures with chiral layers based on thin-wire helix by O.V. Osipov, A.O. Pocheptsov, T.A. Antipova

    Published 2018-03-01
    “…The possibility of incident microwave energy discrete multi-frequency concentration at a number of resonant frequencies is proved. The matrix theory for describing a multilayer chiral metamaterial and the obtained relations for the transfer matrices of the chiral layer based on helices are considered. …”
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    Article
  15. 435

    The fundamentals for craniofacial morphogenesis -A review with emphasis on the decisive dynamics by Gaurav Agnihotri

    Published 2018-01-01
    “…In accordance with functional matrix theory, the major determinant of growth of maxilla and mandible is enlargement of nasal and oral cavities, which grow in response to functional needs. …”
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    Article
  16. 436

    Dynamical Detection of Level Repulsion in the One-Particle Aubry-André Model by Eduardo Jonathan Torres-Herrera, Lea F. Santos

    Published 2020-01-01
    “…By varying the disorder strength within values below the critical point of the model, level statistics similar to those found in random matrix theory are obtained. Dynamically, these properties of the spectrum are manifested in the form of a dip below the equilibration point of the number operator. …”
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    Article
  17. 437

    Finite-time dissipative filter design for discrete-time stochastic interval systems with time-varying delays by Guici Chen, Xin Zhou, Qing Zhang

    Published 2022-11-01
    “…Taking a representative subsystem from a stochastic convex hull system, based on convex analysis and matrix theory, a new interval matrix method is proposed to study the finite-time dissipative filter problem, which can deduct the conservativeness. …”
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    Article
  18. 438

    Normalized Sombor Indices as Complexity Measures of Random Networks by R. Aguilar-Sánchez, J. A. Méndez-Bermúdez, José M. Rodríguez, José M. Sigarreta

    Published 2021-07-01
    “…Within a statistical random matrix theory approach, we show that the average values of Sombor indices, normalized to the order of the network, scale with the average degree. …”
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    Article
  19. 439

    A two-grid mixed finite volume element method for nonlinear time fractional reaction-diffusion equations by Zhichao Fang, Ruixia Du, Hong Li, Yang Liu

    Published 2022-01-01
    “…By using the Browder fixed point theorem and the matrix theory, the existence and uniqueness for the nonlinear and linearized MFVE schemes are obtained, respectively. …”
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    Article
  20. 440

    Asynchronous Consensus Dynamics for Group of High-Order Agents Under Switching Topologies and Time-Varying Delays by Shi Li, Jianping Chen

    Published 2020-01-01
    “…The related knowledge of nonnegative matrix theory is used to solve this convergence problem, and further establish a sufficient algebraic condition of achieving high-order consensus. …”
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    Article