Results 61 to 70 of about 495,795 (215)
On generic homogeneous vector fields
Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2022 Background. The study of dynamical systems with symmetry is of both theoretical and applied interest. Phase portraits of dynamical systems defined by homogeneous vector fields are invariant with respect to the phase space dilation group.
V.Sh. Roytenberg
doaj +1 more source
Countable Fuzzy Topological Space and Countable Fuzzy Topological Vector Space
Journal of Mathematical and Fundamental Sciences, 2015 This paper deals with countable fuzzy topological spaces, a generalization of the notion of fuzzy topological spaces. A collection of fuzzy sets F on a universe X forms a countable fuzzy topology if in the definition of a fuzzy topology, the condition of
Apu Kumar Saha, Debasish Bhattacharya
doaj +1 more source
Search problems in vector spaces [PDF]
Designs, Codes and Cryptography, 2014 We consider the following $q$-analog of the basic combinatorial search problem: let $q$ be a prime power and $\GF(q)$ the finite field of $q$ elements. Let $V$ denote an $n$-dimensional vector space over $\GF(q)$ and let $\mathbf{v}$ be an unknown 1-dimensional subspace of $V$.
Tamás Héger +2 more
openaire +3 more sources
A Duty Cycle Space Vector Modulation Strategy for a Three-to-Five Phase Direct Matrix Converter
Energies, 2018 The duty cycle space vector (DCSV) modulation strategy is of universal significance, and the method can be utilized for different modulation approaches.
Rutian Wang +3 more
doaj +1 more source
Vector meson production at low x from gauge/gravity duality
, 2013 We use gauge/gravity duality to study vector meson (J/?, ? 0 , ?, ?) production in electron-proton scattering, in the limit of high center of mass energy at fixed momentum transfer, corresponding to the limit of low Bjorken x, where the process is ...
Costa, Miguel S. +2 more
core +1 more source
Informal Complete Metric Space and Fixed Point Theorems
Axioms, 2019 The concept of informal vector space is introduced in this paper. In informal vector space, the additive inverse element does not necessarily exist. The reason is that an element in informal vector space which subtracts itself cannot be a zero element ...
Hsien-Chung Wu
doaj +1 more source
Darboux Vector in Four-Dimensional Space-Time
Advances in Mathematical Physics, 2022 As the space-time model of the theory of relativity, four-dimensional Minkowski space is the basis of the theoretical framework for the development of the theory of relativity.
Na Hu, Tingting Zhang, Yang Jiang
doaj +1 more source
Neutrosophic Vector Spaces [PDF]
Neutrosophic Sets and Systems, 2014 The objective of this paper is to study neutrosophic vector spaces. Some basic definitions and properties of the classical vector spaces are generalized. It is shown that every neutrosophic vector space over a neutrosophic field (resp.
A.A.A. Agboola, S.A. Akinleye
doaj
Vector Spaces and the Petersen Graph [PDF]
The Electronic Journal of Combinatorics, 2008 It is shown that a matching covered graph has an ear decomposition with no more than one double ear if and only if there is no set $S$ of edges such that $|S \cap A|$ is even for every alternating circuit $A$ but $|S \cap C|$ is odd for some even circuit $C$. Two proofs are presented. The first uses vector spaces and the second is constructive.
Marcelo Henriques de Carvalho +1 more
openaire +3 more sources
Vector perturbation technique [PDF]
, 2010 La “vector perturbation technique” è una tecnica di codifica che permette di avvicinarsi alla capacità teorica del canale in un sistema MIMO. Questa tecnica va a operare sul vettore dati da trasmettere e si articola in quattro punti fondamentali: Channel
Vianello , Alessandro
core