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Flat tori, lattices and bounds for commutative group codes
(SPRINGER, 2008)
We show that commutative group spherical codes in R(n), as introduced by D. Slepian, are directly related to flat tori and quotients of lattices. As consequence of this view, we derive new results on the geometry of these ...
Multi-commutation in spectrometry
(ELSEVIER SCI LTD, 2009)
We review recent developments in manifold components and the introduction of light-emitting-diode technology in spectroscopic detection in order to evaluate the tremendous possibilities offered by multi-commutation for ...
Solvability of a Commutative Algebra which Satisfies (x 2)2 = 0
(2014)
We studied the solvability of the algebra which satisfies the polynomial identity (x 2)2 = 0. We believe that, if A is a finite dimensional commutative algebra over a field F of characteristic not 2 which satisfies (x 2)2 ...
Commutative Moufang loops and alternative algebras
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2011)
We describe bases of free commutative Moufang loop with seven generators and calculate the order of this loop. (c) 2011 Published by Elsevier Inc.
Orbifolds are not commutative geometries
(2008)
In this note we show that the crucial orientation condition for commutative geometries fails for the natural commutative spectral triple of an orbifold M/G.
Impact of distance on mode of active commuting in Chilean children and adolescents
(MDPI Multidisciplinary Digital Publishing Institute, 2017)
Active commuting could contribute to increasing physical activity. The objective of this study was to characterise patterns of active commuting to and from schools in children and adolescents in Chile. A total of 453 Chilean ...
Evolution of quantum observables: from non-commutativity to commutativity
(Springer, 2020-07)
A fundamental aspect of the quantum-to-classical limit is the transition from a non-commutative algebra of observables to commutative one. However, this transition is not possible if we only consider unitary evolutions. ...
Uma aplicacao da celula de comutacao ZVS-PWM-GEPAE ao conversor DC-AC
(1996-05-01)
This work presents the design and procedure of a DC-to-AC converter using a ZVS Commutation Cell developed by Barbi and Martins (1991) and applied to the family of DC-to-DC PWM converters. Firstly, we show the cell applied ...
New family of zero-current-switching PWM converter
(1999-12-01)
A new family of dc-to-dc pulse-width-modulated (PWM) converters is presented. These converters feature soft-commutation at zero-current (ZC) in the active switches. The new ZCS-PWM Boost and new ZCS-PWM Zeta converters, ...
New family of zero-current-switching PWM converter
(1999-12-01)
A new family of dc-to-dc pulse-width-modulated (PWM) converters is presented. These converters feature soft-commutation at zero-current (ZC) in the active switches. The new ZCS-PWM Boost and new ZCS-PWM Zeta converters, ...