Results 131 to 140 of about 70,693 (320)

Commutators of contactomorphisms

open access: yesAdvances in Mathematics, 2010
The group of volume preserving diffeomorphisms, the group of symplectomorphisms and the group of contactomorphisms constitute the classical groups of diffeomorphisms. The first homology groups of the compactly supported identity components of the first two groups have been computed by Thurston and Banyaga, respectively.
openaire   +3 more sources

Corrections of Electron–Phonon Coupling for Second‐Order Structural Phase Transitions

open access: yesphysica status solidi (b), EarlyView.
The left image illustrates a weak electron–phonon coupling, while the right image depicts a strong electron–phonon coupling. The weak electron–phonon coupling interaction between the lattice and electrons is susceptible to destabilization by an increase in temperature.
Mario Graml, Kurt Hingerl
wiley   +1 more source

Smoothing of commutators for a H\"ormander class of bilinear pseudodifferential operators

open access: yes, 2013
Commutators of bilinear pseudodifferential operators with symbols in the H\"ormander class BS_{1, 0}^1 and multiplication by Lipschitz functions are shown to be bilinear Calder\'on-Zygmund operators.
Bényi, Árpád, Oh, Tadahiro
core  

A Quasi-Commutative Ring That is Not Neo-Commutative [PDF]

open access: yesProceedings of the American Mathematical Society, 1994
An example of a ring that is quasi-commutative but not neo-commutative is given.
openaire   +2 more sources

Efficient Simulation of Open Quantum Systems on NISQ Trapped‐Ion Hardware

open access: yesAdvanced Quantum Technologies, EarlyView.
Open quantum systems exhibit rich dynamics that can be simulated efficiently on quantum computers, allowing us to learn more about their behavior. This work applies a new method to simulate certain open quantum systems on noisy trapped‐ion quantum hardware.
Colin Burdine   +3 more
wiley   +1 more source

The Higher Integrability of Commutators of Calderón-Zygmund Singular Integral Operators on Differential Forms

open access: yesJournal of Function Spaces, 2018
In this article, the higher integrability of commutators of Calderón-Zygmund singular integral operators on differential forms is derived. Also, the higher order Poincaré-type inequalities for the commutators acting on the solutions of Dirac-harmonic ...
Jinling Niu, Yuming Xing
doaj   +1 more source

Sharp maximal and weighted estimates for multilinear iterated commutators of multilinear integrals with generalized kernels

open access: yesJournal of Inequalities and Applications, 2017
In this paper, the authors establish the sharp maximal estimates for the multilinear iterated commutators generated by B M O $BMO$ functions and multilinear singular integral operators with generalized kernels.
Yan Lin, Nan Zhang
doaj   +1 more source

QMM‐Enhanced Error Correction: Demonstrating Reversible Imprinting and Retrieval for Robust Quantum Computation

open access: yesAdvanced Quantum Technologies, EarlyView.
Hardware experiments show a single‐layer Quantum Memory Matrix booster cuts logical error sixfold and, when prepended to a [3,1,3]$[3,1,3]$ repetition code, attains 94 % logical fidelity without extra CX gates. QMM dressing also lowers variational‐training loss by 35 %, offering a measurement‐free, resource‐light route to error suppression on NISQ ...
Florian Neukart   +3 more
wiley   +1 more source

Iterated commutators of multilinear Calderón–Zygmund maximal operators on some function spaces

open access: yesJournal of Inequalities and Applications, 2019
Let T∗ $T^{*}$ be a multilinear Calderón–Zygmund maximal operator. In this paper, we study iterated commutators of T∗ $T^{*}$ and pointwise multiplication with functions in Lipschitz spaces.
Zengyan Si, Pu Zhang
doaj   +1 more source

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