全文获取类型
收费全文 | 253篇 |
免费 | 5篇 |
国内免费 | 9篇 |
专业分类
化学 | 1篇 |
力学 | 1篇 |
综合类 | 3篇 |
数学 | 261篇 |
物理学 | 1篇 |
出版年
2023年 | 5篇 |
2022年 | 2篇 |
2021年 | 15篇 |
2020年 | 3篇 |
2019年 | 6篇 |
2018年 | 6篇 |
2017年 | 5篇 |
2016年 | 4篇 |
2015年 | 4篇 |
2014年 | 6篇 |
2013年 | 46篇 |
2012年 | 10篇 |
2011年 | 20篇 |
2010年 | 15篇 |
2009年 | 23篇 |
2008年 | 12篇 |
2007年 | 15篇 |
2006年 | 7篇 |
2005年 | 8篇 |
2004年 | 11篇 |
2003年 | 6篇 |
2002年 | 5篇 |
2001年 | 3篇 |
2000年 | 7篇 |
1999年 | 2篇 |
1998年 | 4篇 |
1997年 | 4篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 4篇 |
1992年 | 2篇 |
1988年 | 1篇 |
1982年 | 1篇 |
排序方式: 共有267条查询结果,搜索用时 15 毫秒
1.
拟线性抛物型方程广义解的局部有界性 总被引:1,自引:0,他引:1
本文给出了一类较广泛的拟线性抛物型方程广义解的局部有界性,进而也得到了解的Holder连续性. 相似文献
2.
Lihong Huang 《数学学报(英文版)》1995,11(3):307-315
We first give an example to illustrate that the results in [12] concerning the boundedness of solutions of nonlinear oscillatory equations are not true. And then we obtain sufficient or necessary conditions for the boundedness of solutions of the nonlinear system of differential equations
相似文献
3.
A.F. Nindjin 《Journal of Mathematical Analysis and Applications》2008,340(1):340-357
Our investigation concerns the three-dimensional delayed continuous time dynamical system which models a predator-prey food chain. This model is based on the Holling-type II and a Leslie-Gower modified functional response. This model can be considered as a first step towards a tritrophic model (of Leslie-Gower and Holling-Tanner type) with inverse trophic relation and time delay. That is when a certain species that is usually eaten can consume immature predators. It is proved that the system is uniformly persistent under some appropriate conditions. By constructing a proper Lyapunov function, we obtain a sufficient condition for global stability of the positive equilibrium. 相似文献
4.
G. Papaschinopoulos 《Journal of Mathematical Analysis and Applications》2004,289(1):216-230
In this paper we study the boundedness and the asymptotic behavior of the positive solutions of the system of difference equations
5.
Xiong Li 《Proceedings of the American Mathematical Society》2004,132(7):2057-2066
In this paper we will study the boundedness of all solutions for second-order differential equations
where and satisfies the sublinear growth condition. Since the system in general is non-Hamiltonian, we have to introduce reversibility assumptions to apply the twist theorem for reversible mappings. Under some suitable conditions we then obtain the existence of invariant tori and thus the boundedness of all solutions. 6.
XinPingWANG 《数学学报(英文版)》2003,19(4):765-782
In this paper,we are concerned with the boundedness of all the solutions of the equation x″ ax^ -bx- Ф(x)=p(t),where p(t) is a smooth 2π-periodic function,a and b are positive constants,and the perturbation Ф(x) is bounded. 相似文献
7.
刘永民 《数学物理学报(B辑英文版)》2000,20(1)
1IntroductionLetnbeaboundedsynunetricdomaininC"withBerg1llankernelK(z,w),fldenotestheEuclideanclosureofninCnandoflistheTopologicalboundaryWeassumethatnisinitsstandardrepresentationandthevolumemeasuredVofflisuormalized.Itfollowsfrom[1],[2]thatthekernelfullctionsK(-,.)havethespecialproperties:(l):K(O,w)=K(z,o)=l,z,wEfl;(2):K(z,w)/o1zEfl,wEfl;(3):.13hK(z,z)=oo;(4):K(z,w)-'isasmoothfunctiononC',xC".ofcourse,K(z,w)=K(w,z).Thecomplexcol1jugateoffisdenotedbyf.By5.7of[3]andpolarcoordinates,th… 相似文献
8.
赵丽琴 《数学物理学报(B辑英文版)》2007,(2)
In this article, the author studies the boundedness and convergence for the non-Lienard type differential equation (x|·)=a(y)-f(x) (y|·)=b(y)β(x)-g(x) e(t) where a(y),b(y),f(x),g(x),β(x) are real continuous functions in y∈R or x∈R,β(x)≥0 for all x and e(t) is a real continuous function on R = {t: t≥0} such that the equation has a unique solution for the initial value problem. The necessary and sufficient conditions are obtained and some of the results in the literatures are improved and extended. 相似文献
9.
10.
This paper deals with the boundedness in probability and convergence for solutions of stochastic Liénard-type equations. Some explicit conditions to ensure that all solution is bounded in probability and convergent to some fixed sets are obtained. We also show that white noise can affect the boundedness of corresponding deterministic Liénard equations. 相似文献
|