Results 41 to 50 of about 10,984 (200)
American Journal of Botany, Volume 113, Issue 6, June 2026.Abstract Premise The species‐rich flora of Tropical Andes underwent multiple rapid and recent diversifications, yet resolving their evolutionary histories remains challenging despite increasing phylogenomic data. Here, we examined phylogenomic conflict in Brachyotum (Melastomataceae) to identify sources preventing its resolution.
Diego Paredes‐Burneo +5 more
wiley +1 more source
On Integral Manifolds for Leibniz Algebras
Algebra, Volume 2014, Issue 1, 2014., 2014 We discuss several partial solutions to the so‐called “coquecigrue problem” of Loday; these solutions parallel, but also generalize in several directions, the classical Lie group‐Lie algebra correspondence. Our study highlights some clear similarities between the split and nonsplit cases and leads us to a general unifying scheme that provides an answer
Juan Monterde, Fausto Ongay, Pu Zhang
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Eletrônica de Potência, 2017 Este artigo propõe uma topologia de conversor CC-CC integrado para aplicações que exigem elevado ganho de tensão. A topologia integra os conversores Boost e Forward com um único interruptor ativo.
Julian Cezar Giacomini +4 more
doaj +1 more source
The cosymplectic Chern–Hamilton conjecture
Journal of the London Mathematical Society, Volume 113, Issue 2, February 2026.Abstract In this paper, we study the Chern–Hamilton energy functional on compact cosymplectic manifolds, fully classifying in dimension 3 those manifolds admitting a critical compatible metric for this functional. This is the case if and only if either the manifold is co‐Kähler or if it is a mapping torus of the 2‐torus by a hyperbolic toral ...
Søren Dyhr +3 more
wiley +1 more source
Processamento do status de dispositivos chaveáveis como informação a priori na estimação integrada de estados e topologia em sistemas elétricos de potência [PDF]
, 2015 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2015.Este trabalho apresenta uma proposta para a estimação simultânea das variáveis de estado e da ...
Freitas, Victor Silva de
core
A LOCAL PROPERTY OF HAMILTONIAN MOON TOURNAMENTS
Ratio Mathematica, 1992 missing
Cosimo Di Mitri, Cosimo Guido
doaj
On some properties of the asymptotic Samuel function
Mathematische Nachrichten, Volume 298, Issue 7, Page 2401-2423, July 2025.Abstract The asymptotic Samuel function generalizes to arbitrary rings the usual order function of a regular local ring. Here, we explore some natural properties in the context of excellent, equidimensional rings containing a field. In addition, we establish some results regarding the Samuel slope of a local ring.
A. Bravo, S. Encinas, J. Guillán‐Rial
wiley +1 more source
Sistema de Energia Ininterrupta Trifásico Baseado no Conversor de Nove Chaves
Eletrônica de Potência, 2021 Neste trabalho é apresentada uma topologia de conversor usando como base o conversor de nove chaves, sendo utilizada como uma alternativa para fontes ininterruptas de energia na eletrônica de potência, vislumbrando uma melhor qualidade de energia para o
Anderson Lopes +4 more
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On totally umbilical and minimal surfaces of the Lorentzian Heisenberg groups
Mathematische Nachrichten, Volume 298, Issue 6, Page 1922-1942, June 2025.Abstract This paper has manifold purposes. We first introduce a description of the Gauss map for submanifolds (both spacelike and timelike) of a Lorentzian ambient space and relate the conformality of the Gauss map of a surface to total umbilicity and minimality.
Giovanni Calvaruso +2 more
wiley +1 more source
Zero‐curvature subconformal structures and dispersionless integrability in dimension five
Journal of the London Mathematical Society, Volume 110, Issue 6, December 2024.Abstract We extend the recent paradigm “Integrability via Geometry” from dimensions 3 and 4 to higher dimensions, relating dispersionless integrability of partial differential equations to curvature constraints of the background geometry. We observe that in higher dimensions on any solution manifold, the symbol defines a vector distribution equipped ...
Boris Kruglikov, Omid Makhmali
wiley +1 more source