Results 91 to 100 of about 69,983 (325)

Unimodular Commutators [PDF]

open access: yesProceedings of the American Mathematical Society, 1987
Let R R be a principal ideal ring and M k , n {M_{k,n}} the set of k × n k \times n matrices over R R . The following statments are proved: (a) If k ≤ n
openaire   +1 more source

Ultra High Step‐Up Soft Switching Converter Based on the Interleaved Structure

open access: yesEnergy Science &Engineering, EarlyView.
The proposed topology provides high voltage gain and enhanced efficiency at low duty cycles, thereby reducing conduction losses in the switches. Its interleaved structure ensures current sharing, while the switches experience both low voltage and low current stress, further decreasing conduction losses.
Mahdi Alizadeh   +3 more
wiley   +1 more source

Commutators and pronilpotent subgroups in profinite groups

open access: yes, 2013
Let G be a profinite group in which all pronilpotent subgroups generated by commutators are periodic.
Detomi, Eloisa   +2 more
core   +1 more source

On the Q $Q$‐Polynomial Property of Bipartite Graphs Admitting a Uniform Structure

open access: yesJournal of Combinatorial Designs, EarlyView.
ABSTRACT Let Γ ${\rm{\Gamma }}$ denote a finite, connected graph with vertex set X $X$. Fix x ∈ X $x\in X$ and let ε ≥ 3 $\varepsilon \ge 3$ denote the eccentricity of x $x$. For mutually distinct scalars { θ i * } i = 0 ε ${\{{\theta }_{i}^{* }\}}_{i=0}^{\varepsilon }$ define a diagonal matrix A * = A * ( θ 0 * , θ 1 * , … , θ ε * ) ∈ Mat X ( R ) ${A}^
Blas Fernández   +3 more
wiley   +1 more source

Observables of Angular Momentum as Observables on the Fedosov Quantized Sphere

open access: yes, 2005
In this paper we construct the commutators of the Fedosov * (a generalization of the Moyal star product) on the phase space of S2. It is shown that this product obeys the standard angular momentum commutation relations in ordinary nonrelativistic quantum
Sparling, George, Tillman, Philip
core   +1 more source

An Area Efficient 1024-Point Low Power Radix-22 FFT Processor With Feed-Forward Multiple Delay Commutators

open access: yesIEEE Transactions on Circuits and Systems Part 1: Regular Papers, 2018
Radix- $2^{k}$ delay feed-back and radix-K delay commutator are the most well-known pipeline architecture for FFT design. This paper proposes a novel radix-22 multiple delay commutator architecture utilizing the advantages of the radix-22 algorithm ...
Ngoc Le Ba, T. T. Kim
semanticscholar   +1 more source

How Far Are Two Symmetric Matrices From Commuting? With an Application to Object Characterisation and Identification in Metal Detection

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Examining the extent to which measurements of rotation matrices are close to each other is challenging due measurement noise. To overcome this, data is typically smoothed, and the Riemannian and Euclidean metrics are applied. However, if rotation matrices are not directly measured and are instead formed by eigenvectors of measured symmetric ...
P. D. Ledger   +2 more
wiley   +1 more source

Weighted estimates for multilinear Fourier multipliers

open access: yes, 2013
We prove a H\"{o}rmander type multiplier theorem for multilinear Fourier multipiers with multiple weights.
Li, Kangwei, Sun, Wenchang
core   +1 more source

Characterization of compactness of commutators of bilinear singular integral operators [PDF]

open access: yesProceedings of the American Mathematical Society, 2017
The commutators of bilinear Calder\'on-Zygmund operators and point-wise multiplication with a symbol in $cmo$ are bilinear compact operators on product of Lebesgue spaces. This work shows that, for certain non-degenerate Calder\'on-Zygmund operators, the
Lucas Chaffee   +4 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy