Results 81 to 90 of about 762,341 (222)

Inference for Multiple Heterogeneous Networks with a Common Invariant Subspace. [PDF]

J Mach Learn Res, 2021
Arroyo J, Athreya A, Cape J, Chen G, Priebe CE, Vogelstein JT.   +5 more
europepmc   +1 more source

Discrete-Time Exponentially Stabilizing Fuzzy Sliding Mode Control via Lyapunov’s Method

Advances in Fuzzy Systems, 2015
The exponentially stabilizing state feedback control algorithm is developed by Lyapunov’s second method leading to the variable structure system with chattering free sliding modes.
Radiša Ž. Jovanović, Zoran M. Bučevac   +1 more
doaj   +1 more source

Exact Solutions to the Fractional Differential Equations with Mixed Partial Derivatives

Axioms, 2018
In this paper, the solvability of nonlinear fractional partial differential equations (FPDEs) with mixed partial derivatives is considered. The invariant subspace method is generalized and is then used to derive exact solutions to the nonlinear FPDEs ...
Jun Jiang, Yuqiang Feng, Shougui Li
doaj   +1 more source

Invariant Subspaces for Derivations [PDF]

Proceedings of the American Mathematical Society, 1988
In this article it is proved that most of the known sufficient conditions for a subspace from Lat A \mathcal {A} to be hyperinvariant are in fact also sufficient for this subspace to be invariant for all operators from Ad A \mathcal {A} .
openaire   +1 more source

On Some Normality-Like Properties and Bishop's Property (𝛽) for a Class of Operators on Hilbert Spaces

International Journal of Mathematics and Mathematical Sciences, 2012
We prove some further properties of the operator 𝑇∈[𝑛QN] (𝑛-power quasinormal, defined in Sid Ahmed, 2011). In particular we show that the operator 𝑇∈[𝑛QN] satisfying the translation invariant property is normal and that the operator 𝑇∈[𝑛QN] is not ...
Sid Ahmed Ould Ahmed Mahmoud
doaj   +1 more source

Construction of Frames for Shift-Invariant Spaces

Journal of Function Spaces and Applications, 2013
We construct a sequence {ϕi(·-j)∣j∈ℤ,  i=1,…,r} which constitutes a p-frame for the weighted shift-invariant space Vμp(Φ)={∑i=1r∑j∈ℤci(j)ϕi(·-j)∣{ci(j)}j∈ℤ∈ℓμp,  i=1,…,r}, p∈[1,∞], and generates a closed shift-invariant subspace ...
Stevan Pilipović, Suzana Simić
doaj   +1 more source

A Signal Subspace Speech Enhancement Approach Based on Joint Low-Rank and Sparse Matrix Decomposition

Archives of Acoustics, 2016
Subspace-based methods have been effectively used to estimate enhanced speech from noisy speech samples. In the traditional subspace approaches, a critical step is splitting of two invariant subspaces associated with signal and noise via subspace ...
Chengli SUN, Jianxiao XIE, Yan LENG
doaj   +1 more source

Classification of linear differential operators with an invariant subspace of monomials

, 1993
A complete classification of linear differential operators possessing finite-dimensional invariant subspace with a basis of monomials is presented.Comment: 10 ...
Post, Gerhard, Turbiner, Alexander
core   +1 more source

Partial norms and the convergence of general products of matrices

, 1997
Motivated by the theory of inhomogeneous Markov chains, we determine a sufficient condition for the convergence to 0 of a general product formed from a sequence of real or complex matrices.
Neumann, Michael, Schneider, Hans
core   +1 more source

An introduction to Rota’s universal operators: properties, old and new examples and future issues

Concrete Operators, 2016
The Invariant Subspace Problem for Hilbert spaces is a long-standing question and the use of universal operators in the sense of Rota has been an important tool for studying such important problem.
Cowen Carl C., Gallardo-Gutiérrez Eva A.   +1 more
doaj   +1 more source