Results 21 to 30 of about 16,090 (185)

Purely coclosed G2‐structures on nilmanifolds

open access: yesMathematische Nachrichten, Volume 296, Issue 6, Page 2236-2257, June 2023., 2023
Abstract We classify seven‐dimensional nilpotent Lie groups, decomposable or of nilpotency step at most 4, endowed with left‐invariant purely coclosed G2‐structures. This is done by going through the list of all seven‐dimensional nilpotent Lie algebras given by Gong, providing an example of a left‐invariant 3‐form φ which is a pure coclosed G2 ...
Giovanni Bazzoni   +2 more
wiley   +1 more source

Red inalámbrica de sensores con topología lineal sin capa de red

open access: yesRevista de Investigación en Tecnologías de la Información, 2021
A particular case of wireless sensor networks are those that have a linear topology. These networks are used in monitoring large-scale linear infrastructures that are characterized by having thousands of sensor nodes, hundreds of hops and great lengths ...
C. E. Acosta   +2 more
semanticscholar   +1 more source

On the quotient of Milnor and Tjurina numbers for two‐dimensional isolated hypersurface singularities

open access: yesMathematische Nachrichten, Volume 295, Issue 7, Page 1254-1263, July 2022., 2022
Abstract In this paper we give a complete answer to a question posed by Dimca and Greuel about the quotient of the Milnor and Tjurina numbers of a plane curve singularity. We put this question into a general framework of the study of the difference of Milnor and Tjurina numbers for isolated complete intersection singularities showing its connection ...
Patricio Almirón
wiley   +1 more source

La topología como acceso a la teoría lacaniana

open access: yesClaridades: Revista de Filosofía, 2021
En este texto se lleva una lectura de la obra lacaniana a través del estudio de sus figuras topológicas. En este sentido, se afirma que el psicoanálisis lacaniano no hace uso de la topología como si no de una herramienta externa si tratase, es decir ...
Pablo Bernardo Sánchez Gómez
doaj   +1 more source

Reduction of Homogeneous Pseudo-Kähler Structures by One-Dimensional Fibers

open access: yesAxioms, 2020
We study the reduction procedure applied to pseudo-Kähler manifolds by a one dimensional Lie group acting by isometries and preserving the complex tensor. We endow the quotient manifold with an almost contact metric structure. We use this fact to connect
José Luis Carmona Jiménez   +1 more
doaj   +1 more source

Flujos de plasma hidrodinámicos y magnetohidrodinámicos. Parte III

open access: yesTecnología y Ciencia, 2022
En este artículo hallamos la expresión  general de la topología que el campo magnético adopta para poder  limitar las corrientes que se generan a lo largo de sus líneas en plasmas con resistividad no nula.
Néstor Osvaldo Rotstein   +1 more
doaj   +1 more source

Topología del espacio intermedio. La obra del arquitecto paisajista Jussi Jännes en Tapiola

open access: yesVLC Arquitectura, 2023
Entre 1955 y 1967, Jussi Jännes tuvo la oportunidad de proyectar y construir la mayor parte del espacio público de Tapiola, ciudad de nueva planta finlandesa concebida como un laboratorio en el que ensayar soluciones extrapolables a otras intervenciones ...
Enrique Fernández-Vivancos González
doaj   +1 more source

Generating punctured surface triangulations with degree at least 4

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022
As a sequel of a previous paper by the authors, we present here a generating theorem for the family of triangulations of an arbitrary punctured surface with vertex degree ≥ 4.
Chávez María-José   +3 more
doaj   +1 more source

Quasicoincidence for intuitionistic fuzzy points

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
The introduction of intuitionistic fuzzy sets is due to K. T. Atanassov, who also proposed some problems about this subject. D. Çoker defined the intuitionistic fuzzy topological spaces and, with some coworkers, studied these spaces. In this paper, we define and study the notion of quasicoincidence for intuitionistic fuzzy points and obtain a ...
Francisco Gallego Lupiáñez
doaj   +2 more sources

Metric f-Contact Manifolds Satisfying the (κ, μ)-Nullity Condition

open access: yesMathematics, 2020
We prove that if the f-sectional curvature at any point of a ( 2 n + s ) -dimensional metric f-contact manifold satisfying the ( κ , μ ) nullity condition with n > 1 is independent of the f-section at the point, then it is constant
Alfonso Carriazo   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy