Results 121 to 130 of about 766 (271)

Partial Isometries Between Hilbert Modules and Their Compositions

Motivated by questions raised in the preprint [AL20] by Accardi and Lu (private communication), we examine criteria for when the product of two partial isometries between Hilbert spaces is again a partial isometry and we use this to define a new ...
Skeide, Michael
core  

A Coarse Geometric Approach to Graph Layout Problems

Journal of Graph Theory, EarlyView.
ABSTRACT We define a range of new coarse geometric invariants based on various graph–theoretic measures of complexity for finite graphs, including treewidth, pathwidth, cutwidth and bandwidth. We prove that, for bounded degree graphs, these invariants can be used to define functions which satisfy a strong monotonicity property, namely, they are ...
Wanying Huang, David Hume, Samuel J. Kelly, Ryan Lam   +3 more
wiley   +1 more source

One class of C *-algebras generated by a family of partial isometries and multiplicators [PDF]

, 2012
We considera C *-subalgebra of the algebra of all bounded operators on the Hilbert space of square-summable functions defined on some countable set. The algebra under consideration is generated by a family of partial isometries and the multiplier algebra
Kuznetsova A., Patrin E.
core  

Stable Cuts, NAC‐Colourings and Flexible Realisations of Graphs

Journal of Graph Theory, EarlyView.
ABSTRACT A (2‐dimensional) realisation of a graph G $G$ is a pair ( G , p ) $(G,p)$, where p $p$ maps the vertices of G $G$ to R 2 ${{\mathbb{R}}}^{2}$. A realisation is flexible if it can be continuously deformed while keeping the edge lengths fixed, and rigid otherwise.
Katie Clinch, Dániel Garamvölgyi, John Haslegrave, Tony Huynh, Jan Legerský, Anthony Nixon   +5 more
wiley   +1 more source

On the ideals of a C*-algebra generated by a family of partial isometries and multipliers [PDF]

, 2015
© 2015, Pleiades Publishing, Ltd. The C*-subalgebra of the algebra of all bounded operators on the Hilbert space l2 generated by the multiplier algebra and a family of partial isometries satisfying certain relations is considered.
Kuznetsova A., Patrin E.
core  

MR Imaging‐Based Biomarkers for Strength Prediction: A Statistical Shape and Architecture Modeling of Quadriceps Muscles

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Muscle mass decline, associated with strength decline, is a hallmark of aging. Yet, strength decline greatly exceeds mass decline. This indicates that aspects of muscle quality and architecture—not reflected by mass—also influence force generating capacity.
Salim Bin Ghouth, Ozkan Cigdem, Valentina Mazzoli   +2 more
wiley   +1 more source

Lattices in a product of trees, hierarchically hyperbolic groups and virtual torsion-freeness. [PDF]

Bull Lond Math Soc, 2022
Hughes S.
europepmc   +1 more source

One class of C *-algebras generated by a family of partial isometries and multiplicators

, 2020
We considera C *-subalgebra of the algebra of all bounded operators on the Hilbert space of square-summable functions defined on some countable set. The algebra under consideration is generated by a family of partial isometries and the multiplier algebra
Kuznetsova A., Patrin E.
core  

Microfracture for full‐thickness chondral lesions of the knee in elite athletes leads to high return‐to‐play rates

Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.
Abstract Purpose Injuries to the knee are common in elite athletes and often involve damage to the articular cartilage. Given the high demands of elite sport, full‐thickness articular cartilage defects in the knee can be career‐limiting or threatening.
David J. Haslhofer, Jobe Shatrov, Mary Jones, Wahid Abdul, Arman Motesharei, Simon V. Ball, Andy Williams   +6 more
wiley   +1 more source

Origami and materials science. [PDF]

Philos Trans A Math Phys Eng Sci, 2021
Liu H, Plucinsky P, Feng F, James RD.
europepmc   +1 more source