Results 61 to 70 of about 1,171,920 (274)

K-bi-g-frames in Hilbert spaces [PDF]

open access: yesJournal of Algebraic Systems
The notion of K-frames generalizes ordinary frames in that the lower frame bound applies only to elements within the range of K. This paper will introduce the new concept of K-bi-g-frames for Hilbert spaces.
Mohamed Rossafi, Abdelilah Karara
doaj   +1 more source

Čebyšev sets in Hilbert space [PDF]

open access: yesTransactions of the American Mathematical Society, 1969
11x-y > 11x-p(x) | if yeTandy =#p(x). In this case, we call the function x -- p(x) the metric projection onto T. If a set Tc H has the property that to each point in H there is a (not necessarily unique) nearest point in H, then we will call T an existence set.
openaire   +1 more source

Technology Transfer to Underwater Archaeology: The LAHKE Project at the Submerged Neolithic Site of La Marmotta

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT This document is a report on the field application of non‐invasive geophysical and robotic prospecting methods at the submerged Neolithic site of La Marmotta (Lake Bracciano, Italy), within the LAHKE (LAke Heritage Knowledge and Exploration) project; the study focuses on the practical validation, adaptation and transfer of existing ...
dell' Erba Ramiro   +4 more
wiley   +1 more source

Frames in super Hilbert modules [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2018
In this paper, we define super Hilbert module and investigate frames in this space. Super Hilbert modules are  generalization of super Hilbert spaces in Hilbert C*-module setting.
Mehdi Rashidi-Kouchi
doaj  

Controlled Continuous ∗-K-g-Frames for Hilbert C∗-Modules

open access: yesAbstract and Applied Analysis, 2021
Frame theory has a great revolution for recent years. This theory has been extended from Hilbert spaces to Hilbert C∗-modules. In this paper, we define and study the new concept of controlled continuous ∗-K-g-frames for Hilbert C∗-modules and we ...
Abdeslam Touri   +3 more
doaj   +1 more source

On Homeomorphism Spaces of Hilbert Manifolds [PDF]

open access: yesProceedings of the American Mathematical Society, 1983
Let M M be a Hilbert manifold modeled on the separable Hilbert space
openaire   +2 more sources

Performance improvement of discrete‐time linear‐quadratic regulators applied to uncertain linear systems using the Tikhonov regularization method

open access: yesAsian Journal of Control, EarlyView.
Abstract The linear‐quadratic regulator (LQR) problem of optimal control of an uncertain discrete‐time linear system (DTLS) is revisited in this paper from the perspective of Tikhonov regularization. We show that an optimally chosen regularization parameter reduces, compared to the classical LQR, the values of a scalar error function, as well as the ...
Fernando Pazos, Amit Bhaya
wiley   +1 more source

Branching Geodesics of the Gromov-Hausdorff Distance

open access: yesAnalysis and Geometry in Metric Spaces, 2022
In this paper, we first evaluate topological distributions of the sets of all doubling spaces, all uniformly disconnected spaces, and all uniformly perfect spaces in the space of all isometry classes of compact metric spaces equipped with the Gromov ...
Ishiki Yoshito
doaj   +1 more source

Market and Nonmarket Strategies in Focus: How Entrepreneurs Tackling the Grand Challenge of Waste Management Navigate Institutional and Market Adversity in Ghana

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Waste management remains a critical grand challenge in African countries. While entrepreneurship has been a viable strategy for addressing this challenge, it is fraught with constraints. This study investigates the strategies orchestrated by entrepreneurs to navigate adversity in Waste management and ensure the social and economic viability of
Tahiru Azaaviele Liedong   +3 more
wiley   +1 more source

Perturbation and Stability of Continuous Operator Frames in Hilbert C∗-Modules

open access: yesJournal of Mathematics, 2021
Frame theory has a great revolution in recent years. This theory has been extended from the Hilbert spaces to Hilbert C∗-modules. In this paper, we consider the stability of continuous operator frame and continuous K-operator frames in Hilbert C∗-modules
Abdeslam Touri   +3 more
doaj   +1 more source

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