Zobrazeno 1 - 10
of 840
pro vyhledávání: '"SHAO Song"'
The paper gives some multi-dimensional extensions of Hindman's finite sum theorem. In particular, by the method of this paper, we prove that for any finite coloring of $\mathbb N$, there are $a,b\in \mathbb N$ such that there exist (infinitely many)
Externí odkaz:
http://arxiv.org/abs/2408.11661
It is shown that there exist a probability space $(X,{\mathcal X},\mu)$, two ergodic measure preserving transformations $T,S$ acting on $(X,{\mathcal X},\mu)$ with $h_\mu(X,T)=h_\mu(X,S)=0$, and $f, g \in L^\infty(X,\mu)$ such that the limit \begin{e
Externí odkaz:
http://arxiv.org/abs/2407.10728
Publikováno v:
智慧农业, Vol 3, Iss 2, Pp 88-99 (2021)
At present, the dynamic detection and monitoring of maize seedling mainly rely on manual observation, which is time-consuming and laborious, and only small quadrats can be selected to estimate the overall emergence situation. In this research, two ki
Externí odkaz:
https://doaj.org/article/be0680a1dce140eca3d5080c6809af0a
Publikováno v:
Applied Sciences, Vol 12, Iss 9, p 4126 (2022)
The magnetic bearing–rotor system has the advantages of no mechanical friction and active vibration control. A magnetic bearing with redundant structures provides an effective method to apply fault-tolerant control to the magnetic bearing–rotor s
Externí odkaz:
https://doaj.org/article/021ca8cfb27e492bb136caaef3bdc4cc
Publikováno v:
Sensors, Vol 22, Iss 8, p 3012 (2022)
At present, magnetic bearings are a better energy-saving choice than mechanical bearings in industrial applications. However, there are strongly coupled characteristics in magnetic bearing–rotor systems with redundant structures, and uncertain dist
Externí odkaz:
https://doaj.org/article/1560736181a54cb6921feb94a1c1ea26
In this paper, we study the pointwise convergence of some continuous-time polynomial ergodic averages. Our method is based on the topological models of measurable flows. One of main results of the paper is as follow. Let $(X,\mathcal{X},\mu, (T^{t})_
Externí odkaz:
http://arxiv.org/abs/2310.16780
Publikováno v:
Sensors, Vol 21, Iss 16, p 5404 (2021)
Fault tolerance is one of the effective methods to improve the reliability of magnetic bearings, and the redundant magnetic bearing provides a feasible measure for fault-tolerant control. The linearization and accuracy of the electromagnetic force (E
Externí odkaz:
https://doaj.org/article/3e188a81c0de489dae939ab33dcf3fb0
Publikováno v:
Journal für Kulturpflanzen, Vol 70, Iss 7 (2018)
Root-knot nematodes cause significant economic losses worldwide each year. Species with especially high relevance in the tropical and subtropical part of China are Meloidogyne incognita and M. javanica. The disomic rapeseed-radish chromosome addition
Externí odkaz:
https://doaj.org/article/921424c2d0a147eaa41538d2650c2334
It is shown that for polynomials $p_1, p_2 \in {\mathbb Z}[t]$ with ${\rm deg}\ p_1, {\rm deg}\ p_2\ge 5$ there exist a probability space $(X,{\mathcal X},\mu)$, two ergodic measure preserving transformations $T,S$ acting on $(X,{\mathcal X},\mu)$ wi
Externí odkaz:
http://arxiv.org/abs/2301.12409
In this paper, a polynomial version of Furstenberg joining is introduced and its structure is investigated. Particularly, it is shown that if all polynomials are non-linear, then almost every ergodic component of the joining is a direct product of an
Externí odkaz:
http://arxiv.org/abs/2301.07881