Results 51 to 60 of about 108,441 (303)

Two-step Ulm-Chebyshev-like method for inverse singular value problems with multiple singular values [PDF]

open access: yes
summary:We study the convergence of two-step Ulm-Chebyshev-like method for solving the inverse singular value problems. We focus on the case when the given singular values are positive and multiple. This work extends the result of W. Ma (2022).
Ma, Wei, Zhu, Yuqing, Dang, Yawei
core   +1 more source

Singular values, norms, and commutators [PDF]

open access: yes, 2010
Let Ai,Bi, and Xi, i=1,…,n, be bounded linear operators on a separable Hilbert space such that Xi is compact for i=1,…,n. It is shown that the singular values of ∑i=1nAiXiBi are dominated by those of ∑i=1n‖Ai‖‖Bi‖(⊕i=1nXi), where ‖·‖ is the usual ...
Hirzallah, Omar, Kittaneh, Fuad
core   +1 more source

Computing μ-Values for Real and Mixed μ Problems

open access: yesMathematics, 2019
In various modern linear control systems, a common practice is to make use of control in the feedback loops which act as an important tool for linear feedback systems.
Mutti-Ur Rehman   +2 more
doaj   +1 more source

Singular Values of Trilinear Forms [PDF]

open access: yesExperimental Mathematics, 2001
Let T : H 1 × H 2 × H 3 → C be a trilinear form, where H 1, H 2, H 3 are separable Hilbert spaces. In the hypothesis that at least two of the three spaces are finite dimensional we show that the norm square λ = ∥T∥2 is a root of a certain algebraic equation, usually of very high degree, which we baptize the millennia] equation, because it is an ...
Bo Bernhardsson, Jaak Peetre
openaire   +2 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

Perturbation Results for Singular Values [PDF]

open access: yes, 1999
The singular values of a perturbed complex-valued matrix A+epsilon B + O(epsilon2) are shown to have singular values of the form sigmai(epsilon)=sigmai + kiepsilon + O(epsilon2). Explicit expressions for the ki coefficients are derived. The cases of zero
Söderström, Torsten
core  

Majorzation and singular values [PDF]

open access: yes, 1987
A majorization result is proved which involves the singular values of a matrix Aand those of ΣDkAEk Where Dk, Ek are arbitrary matrices of the same order.
Bapat, R. B.
core   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

SINGULAR VALUES OF TOURNAMENT MATRICES [PDF]

open access: yes, 1999
Upper and lower bounds on both the largest and smallest singular values of a tournament matrix M of order n are obtained.
Kirkland, Stephen J.   +5 more
core   +1 more source

The characteristics of the singular values. [PDF]

open access: yes, 2020
The characteristics of the singular values.
Heyu Hu (8668383)   +3 more
core   +1 more source

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