Results 31 to 40 of about 778 (105)
Willmore‐Like Tori in Killing Submersions
Advances in Mathematical Physics, Volume 2018, Issue 1, 2018., 2018 The first variation formula and Euler‐Lagrange equations for Willmore‐like surfaces in Riemannian 3‐spaces with potential are computed and, then, applied to the study of invariant Willmore‐like tori with invariant potential in the total space of a Killing submersion.
Manuel Barros +3 more
wiley +1 more source
Proper 3‐realizability and second cohomology of groups on two generators of finite order
Bulletin of the London Mathematical Society, Volume 58, Issue 7, July 2026.Abstract Given an (infinite) finitely generated group G$G$, its first cohomology group H1(G;ZG)$H^1(G;{\mathbb {Z}}G)$ is free abelian and “counts” the number of ends of G$G$ which equals 1+rank(H1(G;ZG))$1 + rank (H^1(G;{\mathbb {Z}}G))$. The question whether or not for every finitely presented group G$G$ its second cohomology group H2(G;ZG)$H^2(G ...
Francisco F. Lasheras, R. Roy
wiley +1 more source
A New Algebraic Approach to Decision Making in a Railway Interlocking System Based on Preprocess
Mathematical Problems in Engineering, Volume 2018, Issue 1, 2018., 2018 The safety of railway networks is a very important issue. Roughly speaking, it can be split into safety along lines and safety of railway facilities such as stations, junctions, yards, etc. In modern networks the safety along lines is controlled by automatic block systems that do not give clearance to trains to enter a section (block) until the latter ...
Antonio Hernando +3 more
wiley +1 more source
Revista ChicomoztocLa Poroscopia del maestro Edmond Alexander Locard de 1912, fue planteada como un análisis complementario del método dactiloscópico, porque las cortes veían con incertidumbre que una sola huella es muy poca evidencia, cuando el ser humano tiene 10 ...
Luis Arturo Herrera Garcia +2 more
doaj +1 more source
Pulso: Revista de Educación, 2011 Presentamos una guía matemática, evolutiva y didáctica para estudiar el juego de construcción en la Educación Infantil y reflexionar sobre las posibilidades que ofrece para el aprendizaje de las matemáticas.
Carlos de Castro Hernández +2 more
doaj +1 more source
Isotopies of complete minimal surfaces of finite total curvature
Journal of the London Mathematical Society, Volume 114, Issue 1, July 2026.Abstract Let M$M$ be a Riemann surface biholomorphic to an affine algebraic curve. We show that the inclusion of the space ℜNC∗(M,Cn)$\Re \mathrm{NC}_*(M,\mathbb {C}^n)$ of real parts of nonflat proper algebraic null immersions M→Cn$M\rightarrow \mathbb {C}^n$, n⩾3$n\geqslant 3$, into the space CMI∗(M,Rn)$\mathrm{CMI}_*(M,\mathbb {R}^n)$ of complete ...
Antonio Alarcón +2 more
wiley +1 more source
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
wiley +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
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