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Joint Numerical Range of Matrix Polynomials [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2009
Some algebraic properties of the sharp points of the joint numerical range of a matrix polynomials are the main subject of this paper. We also consider isolated points of the joint numerical range of matrix polynomials.
Ahmed Sabir
doaj   +2 more sources

Robotic-Assisted Dynamic Intraoperative Assessment of Coronal Plane Stability Across the Range of Motion During Total Knee Arthroplasty [PDF]

open access: yesJournal of Orthopaedic Case Reports
Introduction: Mid-flexion instability and variable gap balancing across the range of motion remain key challenges in achieving optimal outcomes in total knee arthroplasty (TKA). Different robotic systems, as well as traditional methods of gap assessment,
K T Rajashekhar   +2 more
doaj   +2 more sources

Kippenhahn's Theorem for Joint Numerical Ranges and Quantum States [PDF]

open access: yesSIAM Journal on Applied Algebra and Geometry, 2021
28 pages, 5 figures; version v2 extends version v1 in applications and examples and has more detailed proofs.
Daniel Plaumann   +2 more
openaire   +2 more sources

On joint numerical ranges [PDF]

open access: yesPacific Journal of Mathematics, 1978
The joint numerical status of commuting bounded operators Ai and A2 on a Hubert space is defined as {{φiA^y φ(A2)) such that φ is a state on the C*-algebra generated by Ax and A2}. It is shown that if At and A2 are commuting normal operators then their joint numerical status equals the closure of their joint numerical range.
Buoni, John J., Wadhwa, Bhushan L.
openaire   +3 more sources

H-joint numerical ranges [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2002
The notion of the joint numerical range of several linear operators with respect to a sesquilinear form is introduced. Geometrical properties of the joint numerical range are studied, in particular, convexity and angle points, in connection with the algebraic properties of the operators. The main focus is on the finite dimensional case.
Li, Chi-Kwong, Rodman, Leiba
openaire   +2 more sources

Weld size and resistance in rectangular hollow section T-joints

open access: yesHeliyon, 2023
When chord face failure occurs, one of the factors, which influence the resistance of the square hollow sections joint is the brace-to-chord width ratio of the joint. This includes the size of the weld connecting the two members.
Petr Jehlicka, Frantisek Wald
doaj   +1 more source

Numerical study on the influence of geometric parameters on mechanical properties of Tapered Head Grouted Sleeve joints

open access: yesCase Studies in Construction Materials, 2022
In order to ensure the effectiveness of the Tapered Head Grouted Sleeve (THS) joints and reduce its impact on prefabricated components, three-dimensional numerical analysis models were established based on the large-scale general finite element analysis ...
Jinnan Chen   +4 more
doaj   +1 more source

Low-Complexity Joint 3D Super-Resolution Estimation of Range Velocity and Angle of Multi-Targets Based on FMCW Radar

open access: yesSensors, 2022
Multi-dimensional parameters joint estimation of multi-targets is introduced to implement super-resolution sensing in range, velocity, azimuth angle, and elevation angle for frequency-modulated continuous waveform (FMCW) radar systems.
Yingchun Li   +3 more
doaj   +1 more source

Investigation of a Passive Ankle Joint Exoskeleton Designed for Movements with Dorsal and Plantar Flexion

open access: yesEngineering Proceedings, 2023
The ankle exoskeleton is an auxiliary device designed to restore human independence. This paper proposes the development and initial testing of a passive ankle exoskeleton designed for movements with dorsal and plantar flexion. The device also includes a
Nursultan Zhetenbayev   +3 more
doaj   +1 more source

Joint separable numerical range and bipartite entanglement witness [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2020
In 2017 an idea considering a pair of Hermitian operators of product form was published, which is called ultrafine entanglement witnessing. In 2018 some rigorous results were given. Here we improve their work. First we point this idea can be directly derived from an earlier concept named joint separable numerical range and explain how it works as a ...
Wu, Pan, Tang, Runhua
openaire   +4 more sources

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