Results 51 to 60 of about 96,750 (268)

On the spectra of commutators [PDF]

open access: yesProceedings of the American Mathematical Society, 1954
2. R. Godement, Les fonctions de type positif et la theorie des groupes, Trans. Amer. Math. Soc. vol. 63 (1948) pp. 1-84. 3. P. R. Halmos, Measure theory, New York, 1950. 4. R. J. Koch, Tulane University Dissertation, 1953. 5. L. H. Loomis, An introduction to abstract harmonic analysis, New York, 1953. 6. K.
openaire   +1 more source

Scrambling‐Enhanced Quantum Battery Charging in Black Hole Analogues

open access: yesAdvanced Science, EarlyView.
By employing a black‐hole‐analog quantum battery constructed from a position‐dependent XY model, its dynamical behavior is investigated through a quench of the scrambling parameter. It is systematically quantified that how the simulated scrambling improves key performance metrics‐namely, stored energy, peak power, and charging time‐thereby offering a ...
Zhilong Liu   +3 more
wiley   +1 more source

Compactness of commutators of fractional integral operators on ball Banach function spaces

open access: yesAIMS Mathematics
Let $ 0 < \alpha < n $ and $ b $ be a locally integrable function. In this paper, we obtain the characterization of compactness of the iterated commutator $ (T_{\Omega, \alpha})_{b}^{m} $ generated by the function $ b $ and the fractional integral ...
Heng Yang, Jiang Zhou
doaj   +1 more source

Precompact Sets, Boundedness, and Compactness of Commutators for Singular Integrals in Variable Morrey Spaces

open access: yesJournal of Function Spaces, 2017
We give sufficient conditions for subsets to be precompact sets in variable Morrey spaces. Then we obtain the boundedness of the commutator generated by a singular integral operator and a BMO function on the variable Morrey spaces.
Wei Wang, Jingshi Xu
doaj   +1 more source

48-Volt Energy Efficient Domestic Appliances With Flux Switching Motor Drive System–Design, Simulation, and Comparison

open access: yesIEEE Access, 2022
Energy-Efficient domestic appliances are the need of the hour. This paper explores the importance of 48-Volt domestic appliances especially those operated with an electric motor drive system.
Natesan Chokkalingam Lenin
doaj   +1 more source

The yoga of commutators [PDF]

open access: yesJournal of Mathematical Sciences, 2011
In the present paper we discuss some recent versions of localisation methods for calculations in the groups of points of algebraic-like and classical-like groups. Namely, we describe relative localisation, universal localisation, and enhanced versions of localisation-completion.
Hazrat, Roozbeh (R16959)   +3 more
openaire   +3 more sources

Coordinate‐ and Spacetime‐Independent Quantum Physics

open access: yesAnnalen der Physik, EarlyView.
This article studies in the framework of quantum field theory in curved spacetime, if there exists a single zero‐rank‐tensor solution of a Klein‐Gordon PDE, being valid at once for the depicted spacetimes. The answer is shown to be affirmative, even for a class of such solutions having the standard applications in particle physics. ABSTRACT The concept
Viacheslav A. Emelyanov, Daniel Robertz
wiley   +1 more source

N-dimensional fractional Hardy operators with rough kernels on central Morrey spaces with variable exponents

open access: yesAIMS Mathematics, 2023
In this paper, we obtain some boundedness of the n-dimensional fractional Hardy operators with rough kernels and their commutators on central Morrey spaces with variable exponents.
Chenchen Niu, Hongbin Wang
doaj   +1 more source

Stable commutator length in word-hyperbolic groups [PDF]

open access: yes, 2009
In this paper we obtain uniform positive lower bounds on stable commutator length in word-hyperbolic groups and certain groups acting on hyperbolic spaces (namely the mapping class group acting on the complex of curves, and an amalgamated free product ...
Calegari, Danny, Fujiwara, Koji
core   +1 more source

Outer commutator words are uniformly concise

open access: yes, 2009
We prove that outer commutator words are uniformly concise, i.e. if an outer commutator word w takes m different values in a group G, then the order of the verbal subgroup w(G) is bounded by a function depending only on m and not on w or G.
Fernández-Alcober, Gustavo A.   +1 more
core   +1 more source

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