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61.
It is known that a C–rpp semigroup can be described as a strong
semilattice of left cancellative monoids. In this paper, we
introduce the class of left C–wrpp semigroups which includes the
class of left C–rpp semigroups as a subclass. We shall
particularly show that the semi-spined product of a left regular
band and a C–wrpp semigroup forms a curler which is a left
C–wrpp semigroup and vice versa. Results obtained by Fountain
and Tang on C–rpp semigroups are extended and strengthened. 相似文献
62.
The Semigroup Structure of Left
Clifford Semirings 总被引:5,自引:0,他引:5
YuQiGUO KarPingSHUM 《数学学报(英文版)》2003,19(4):783-792
In this paper,we generalize Clifford semirings to left Clifford semirings by means of the so-called band semirings.We also discuss a special case of this kind of semirings,that is, strong distributive lattices of left rings. 相似文献
63.
通过引入ω-Nerode等价关系,fuzzy前逆缀ω-语言,闭左逆语言等概念来研究语言的化数性质,得到了(1)fuzzyω正则语言可由一些具有有限指标集的等价类来表示;(2)fuzzy前逆缀ω-语言是fuzzyω正则语言iff由L定义的ω-Nerode等价关系的指标集是有限的. 相似文献
64.
65.
Jan Ga?uszka 《Discrete Mathematics》2008,308(24):6414-6425
Connections of some groupoid identities with the quasigroup and Latin square properties are investigated using combinatorial methods. 相似文献
66.
This article gives a sufficient condition which guarantees the existence of a reference frame in which a multi-output nonlinear system is linearizable with a linear part depending on its outputs. Our method is based on the design of a reference frame associated with nonlinear observable systems. Moreover, we give a generalization of the result obtained in [D. Boutat, G. Zheng, J.P. Barbot, Observer error linearization multi-output depending, in: Proc. of IEEE CDC 06, 2006] and [G. Zheng, D. Boutat, J.P. Barbot, Single output-dependent observability normal form, SIAM Journal on Control and Optimization 46 (6) (2007)]. And some examples are given in order to illuminate our thinking. 相似文献
67.
T.F. Gundogdu Mutlu Gkkavas Kaan Güven M. Kafesaki C.M. Soukoulis Ekmel Ozbay 《Photonics and Nanostructures》2007,5(2-3):106-112
The effect of conductivity variation as a proposed method for the investigation of photoconductive switching properties of split ring resonators (SRRs) is simulated. Three different systems that are applicable under certain fabrication and/or optical excitation conditions are described. The simulated transmission spectrum indicates that for a large range of dark conductivity values, complete switching of the SRR resonance is possible. One of the simulated systems, involving split ring resonators on Si substrate, was fabricated and characterized. The transmission spectrum of that system was measured, with the Si in its high-resistivity state, and a −60 dB dip between 108 and 115 GHz, due to SRRs magnetic resonance, was observed. 相似文献
68.
Mario Petrich 《Acta Mathematica Hungarica》2005,107(1-2):71-75
Summary For a commutative cancellative semigroup S , we define the rank of S intrinsically. This definition implies that the rank of S equals the usual rank of its group of quotients. We also characterize the rank in terms of embeddability into a rational vector space of the greatest power cancellative image of S. 相似文献
69.
Yoshio Agaoka 《Proceedings of the American Mathematical Society》2001,129(9):2753-2762
We show the uniqueness of left invariant symplectic structures on the affine Lie group under the adjoint action of , by giving an explicit formula of the Pfaffian of the skew symmetric matrix naturally associated with , and also by giving an unexpected identity on it which relates two left invariant symplectic structures. As an application of this result, we classify maximum rank left invariant Poisson structures on the simple Lie groups and . This result is a generalization of Stolin's classification of constant solutions of the classical Yang-Baxter equation for and .
70.
Kar Ping Shum 《中国科学A辑(英文版)》2004,47(4):552-565
We define orthodox super rpp semigroups and study their semilattice decompositions. Standard representation theorem of orthodox super rpp semigroups whose sub-band of idempotents is in the varieties of bands described by an identity with at most three variables are obtained. 相似文献