Results 11 to 20 of about 762,341 (222)
Uniform Bounds for Invariant Subspace Perturbations [PDF]
SIAM Journal on Matrix Analysis and Applications, 2019 For a fixed matrix A and perturbation E we develop purely deterministic bounds on how invariant subspaces of A and A+E can differ when measured by a suitable "row-wise" metric rather than via traditional norms such as two or Frobenius.
Anil Damle, Yuekai Sun
semanticscholar +1 more source
SSA of biomedical signals: A linear invariant systems approach [PDF]
, 2010 Singular spectrum analysis (SSA) is considered from a linear invariant systems perspective. In this terminology, the extracted components are considered as outputs of a linear invariant system which corresponds to finite impulse response (FIR) filters ...
Figueiredo, Nuno +5 more
core +3 more sources
Hidden symmetries and large N factorisation for permutation invariant matrix observables
Journal of High Energy Physics, 2022 Permutation invariant polynomial functions of matrices have previously been studied as the observables in matrix models invariant under S N , the symmetric group of all permutations of N objects.
George Barnes +2 more
doaj +1 more source
Solving systems of multi-term fractional PDEs: Invariant subspace approach [PDF]
Advances in Complex Systems, 2018 In the present paper, invariant subspace method has been extended for solving systems of multi-term fractional partial differential equations (FPDEs) involving both time and space fractional derivatives.
Sangita Choudhary +1 more
semanticscholar +1 more source
On quasinilpotent operators and the invariant subspace problem [PDF]
Journal of Mathematical Analysis and Applications, 2018 We show that a bounded quasinilpotent operator $T$ acting on an infinite dimensional Banach space has an invariant subspace if and only if there exists a rank one operator $F$ and a scalar $\alpha\in\mathbb{C}$, $\alpha\neq 0$, $\alpha\neq 1$, such that $
A. Tcaciuc
semanticscholar +1 more source
Speed invariant gait recognition-The enhanced mutual subspace method.
PLoS ONE, 2021 This paper introduces an enhanced MSM (Mutual Subspace Method) methodology for gait recognition, to provide robustness to variations in walking speed.
Yumi Iwashita +3 more
doaj +2 more sources
The invariant subspace problem for rank-one perturbations [PDF]
Duke mathematical journal, 2017 We show that for any bounded operator $T$ acting on an infinite dimensional Banach space there exists an operator $F$ of rank at most one such that $T+F$ has an invariant subspace of infinite dimension and codimension.
A. Tcaciuc
semanticscholar +1 more source
, 2020 In this work, the well known invariant subspace method has been modified and extended to solve some partial differential equations involving Caputo-Fabrizio (CF) or Atangana-Baleanu (AB) fractional derivatives. The exact solutions are obtained by solving
Kamal Ait Touchent +2 more
semanticscholar +1 more source
Phase Unwinding, or Invariant Subspace Decompositions of Hardy Spaces [PDF]
Journal of Fourier Analysis and Applications, 2017 We consider orthogonal decompositions of invariant subspaces of Hardy spaces, these relate to the Blaschke based phase unwinding decompositions (Coifman and Steinerberger in J Fourier Anal Appl 23(4):778–809, 2017; Coifman et al.
R. Coifman, J. Peyriére
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Subspace Identification for Multi-Source Domain Adaptation [PDF]
Neural Information Processing Systems, 2023 Multi-source domain adaptation (MSDA) methods aim to transfer knowledge from multiple labeled source domains to an unlabeled target domain. Although current methods achieve target joint distribution identifiability by enforcing minimal changes across ...
Zijian Li +5 more
semanticscholar +1 more source