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1.
In that paper, we new study has been carried out on previous studies of one of the most important mathematical models that describe the global economic movement, and that is described as a non-linear fractional financial model of awareness, where the studies are represented at the steps following:One:The schematic of the model is suggested. Two:The disease-free equilibrium point (DFE) and the stability of the equilibrium point are discussed.Three:The stability of the model is fulfilled by drawin...  相似文献   

2.
In this paper, we consider the ground-states of the following M-coupled system:where p_(ij)+q_(ij)=2*:=2 N/(N-2)(N≥3). We prove the existence of ground-states to the M-coupled system. At the same time, we not only give out the characterization of the ground-states, but also study the number of the ground-states, containing the positive ground-states and the semi-trivial ground-states, which may be the first result studying the number of not only positive ground-states but also semi-trivial ground-states.  相似文献   

3.
In this paper the author classifies the finite groups satisfying the following condition:(A) every non-maximal proper subgroup of even order is 2-closed.Particularly, the following theorem is shown: A_5 and SL(2, 5) are the only non-solvable groups satisfying the condition(A).  相似文献   

4.
号1 Introduetion Baekltlnd transforx]:atioll工)lajsa丁1 in]portant role in the sLt,d了ofnonlinear evol:ltio;:equatioo.lt 15 inti工,latel了eon:leeted从ith theapplieability of the 11飞verse se:、t土e,,i:;城仃l(一土hod for solvixl隽tlxoi,litialYal、le pro}、len一,the cxisteneoo,5011土01::olutions and生1101、lfinitolynla,ly eonservation la、、5 as、、ell:LS the eapal)ility for the equatioil totransfor叮1 to tlle ftlll integrable工王arnilton sjstetn.Tu Guizhangpointed otzt that to dcrive the infi…  相似文献   

5.
戴道清  刘名生 《数学进展》2001,30(4):381-383
1 Introduction Let Ω be the unit disk {z: |z| < 1} in the complex plane C. In this paper, we consider the following boundary value problem: Find out a λ and the analytic function u(z) in the unit disk Ω such that they satisfy the boundary condition  相似文献   

6.
Let Xij denote the observation of the primary toxicological endpoint for the jth experimentalunit in the ith group,i=0,1 and J=1,…,M.Assume XiJ to be i.i.d.一N(m,cri2)withp0 denoting the toxicological effect for the control group and“l denoting the effect for thenew substance group.The traditional approach to prove the hazard of a new substance isformulated as follows: ’ . H0:肛1一p0≤0,the new substance is safe under test conditions, H1:pl—p0>0,the new substance iS hazardous under test…  相似文献   

7.
In the present paper,the local well-posedness of the incompressible viscoelastic fluid system in the whole space is proved under the following assumption on the initial data:the deformation tensor is Hlder continuous and the velocity is Lp integrable,pd,where d is the space dimension.  相似文献   

8.
In this paper, we explore the fixed point theory of n-valued maps using configuration spaces and braid groups, focusing on two fundamental problems, the Wecken property, and the computation of the Nielsen number. We show that the projective plane(resp. the 2-sphere S~2) has the Wecken property for n-valued maps for all n ∈ N(resp. all n 3). In the case n = 2 and S~2, we prove a partial result about the Wecken property.We then describe the Nielsen number of a non-split n-valued map ? : X■X of an orientable, compact manifold without boundary in terms of the Nielsen coincidence numbers of a certain finite covering q : X → X with a subset of the coordinate maps of a lift of the n-valued split map ? ? q : X■X.  相似文献   

9.
We study the existence of solutions to the second order three-point boundary value problem: where 0 <η< 1, α∈R, and f : [0, 1]×R×R→R, Ii: R×R→R, Ji : R×R→R(i=1,2,…k) are continuous. Our results is new and different from previous results. In particular, we obtain the Green function of the problem, which makes the problem simpler.  相似文献   

10.
In this paper, we have analysed the dynamical behavior of the Josephson Junction equation bynumerical computation and the theory of dynamical systems. As 0<β<2:1 ε, and ρis not sufficientlylarge, we observed the intermittent chaotic behavior and the period-doubling chaotic behavior in whichpeople are very interested recently. This implies the for some β(0<β<2:1 ε), the dynamicalbehavior of the J-J equation is rather complex.  相似文献   

11.
张建平  蔡果兰 《数学季刊》2006,21(3):375-380
Consider the following equations: Where 0 <η< 1,0 <α< 1, and f : [0,1]×[0,∞)→[0,∞), Ii,Li : [0,∞)→R, (i = 1,2,…, k) are continuous functions. We prove the existence of eigenvalues for the problem under a weaker condition, moreover we do not require the monotonicity of the impulsive functions.  相似文献   

12.
O. Introduction When a group G is regarded as a category consisting of only one object and the hom-set G, the operation α α~(-1),as we know, is a full and faithful contravariant functor: G→G. Secondly,showed that in a preadditive category (or more widely, in an n-preadditive category satisfying the condition (E)) the operation φ:α satisfies the following:  相似文献   

13.
中立型二阶非线性微分方程振动性的判据   总被引:7,自引:0,他引:7  
Abstract. In this paper ,the oscillation criteria for the solutions of the nonlinear differential e-quations of neutral type of the forms:  相似文献   

14.
This paper gives the truncated version of the Minpert method:the incomplete minimum perturbation algorithm(IMinpert).It is based on an incomplete orthogonal- ization of the Krylov vectors in question,and gives a quasi-minimum backward error solution over the Krylov subspace.In order to make the practical implementation of IMinpert easy and convenient,we give another approximate version of the IMinpert method:A-IMinpert.Theoretical properties of the latter algorithm are discussed.Nu- merical experiments are reported to show the proposed method is effective in practice and is competitive with the Minpert algorithm.  相似文献   

15.
The article deals with the waiting time process of the GI/G/1 queueing system.We shall give that the rate of convergence to the stationary distribution and the decay of the stationary tail only depend on the tail of the service distribution,but not on the interarrival distribution.We shall also give explicit criteria for the rate of convergence and decay of stationary tail for three specific types of subgeometric cases(Case 1:the rate function r(n)=exp(sn1/1+α),α>0,s>0;Case 2:polynomial rate function r(n)=nα,α>0;Case 3:logarithmic rate function r(n)=logαn,α>0).  相似文献   

16.
We eall following sampling a random symmetrieal sampling:Let the 512亡5 of a population疡二哎Yl,Y:,…,Y二},N二ZK(K 15 a pasitive whole namber),We divide the疡into two grups:‘,~{Y:,Y:,…,Y.}、e:={Y.+;,Y,+:,…,Y,}too draw a radom sample whieh sizes”一2泛(and庵15a pasitive whole number,andl(k簇K),First we draw a simple random sampley:,y:,…,y,from the‘,,Sinee the sample Correspondly to get a sampley;,y妥,一,y几from the。:and to satisfythat when苏from the 02 and to satisfy that when少‘15…  相似文献   

17.
In 2003, Gasser-Hsiao-Li [JDE(2003)] showed that the solution to the bipolar hydrodynamic model for semiconductors(HD model) without doping function time-asymptotically converges to the diffusion wave of the porous media equation(PME) for the switch-off case. Motivated by the work of Huang-Wu[arXiv:2210.13157], we will confirm that the time-asymptotic expansion proposed by Geng-Huang-Jin-Wu [arXiv:2202.13385] around the diffusion wave is a better asymptotic profile for the HD model in this paper...  相似文献   

18.
Let the triangle matrix Aru be a generalization of the Cesàro matrix and U ∈{c0,c,l}.In this study,we essentially deal with the space U(Aru) defined by the domain of Aru in the space U and give the bases,and determine the K?the-Toeplitz,generalized K?theToeplitz and bounded-duals of the space U(Aru).We characterize the classes(l(Aru):l),(l(Aru):c),(c(Aru):c),and...  相似文献   

19.
IntroductionThe effect of diffusion on the permanence of population has been studied in some refer-ences. LevinI1] set up the followiIlg model to study the effect of diffusion on the permanence ofpopulation:: f \' \ =.tvhere ur(t) defines the number of population i in patch p, uu = (ut,'. u:). f,u(uu) isthe int!.i11sic growth rate fOr population t, and D:' is the (1iffosive rate of population l frompatch 7 to patch U. Hastingsi2J proved that the positive equilibrium state is stab1e for suf…  相似文献   

20.
In this paper, by using the probabilistic method, we obtained a decomposition theorem for the harmonic functions, generalized and strengthened some theorems: Doob's theorem on the limit behaviors of the superharmonic functions, Bocher's theorem on the representation of the harmonic functions and the extension theorem of the harmonic functions etc.  相似文献   

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