搜索结果: 46-60 共查到“知识库 微分代数”相关记录83条 . 查询时间(6.403 秒)
L^{p}-solutions of backward doubly stochastic differential equations
stochastic differential equations math
2010/11/19
The goal of this paper is to solve backward doubly stochastic differential equation (BDSDE, in short) under weak assumptions on the data. The first part is devoted to the development of some new techn...
An analogue of the Conjecture of Dixmier is true for the algebra of polynomial integro-differential operators
Conjecture algebra polynomial integro-differential operators
2010/11/19
Let $A_1:=K\langle x, \frac{d}{dx} \rangle$ be the Weyl algebra and $\mI_1:= K\langle x, \frac{d}{dx}, \int \rangle$ be the algebra of polynomial integro-differential operators over a field $K$ of cha...
The algebra of integro-differential operators on an affine line and its modules
algebra integro-differential operators affine line
2010/11/19
For the algebra $\mI_1= K\langle x, \frac{d}{dx}, \int \rangle$ of polynomial integro-differential operators over a field $K$ of characteristic zero, a classification of simple modules is given. It i...
Arithmetic properties of centralizers of diffeomorphisms of the half-line
Arithmetic properties centralizers diffeomorphisms
2010/11/22
Let f be a smooth diffeomorphism of the half-line fixing only the origin and Z^r_f its centralizer in the group of C^r diffeomorphisms. According to well-known results of Szekeres and Kopell, Z^1_f i...
Recurrence and differential relations for spherical spinors
Recurrence and differential relations spherical spinors
2010/11/22
We present a comprehensive table of recurrence and differential relations obeyed by spin one-half spherical spinors (spinor spherical harmonics) $\Omega_{\kappa\mu}(\mathbf{n})$ used in relativistic ...
Spatial Besov Regularity for Stochastic Partial Differential Equations on Lipschitz Domains
Spatial Besov Regularity Partial Differential Equations Lipschitz Domains
2010/11/15
We use the scale of Besov spaces B^\alpha_{\tau,\tau}(O), \alpha>0, 1/\tau=\alpha/d+1/p, p fixed, to study the spatial regularity of the solutions of linear parabolic stochastic partial differential ...
Leaves and trajectories for schemes. Application to the comparison of three classical sheaves over the differential spectrum
Leaves trajectories schemes classical sheaves the differential spectrum
2010/11/15
We define leaves and trajectories for schemes endowed with a vector field. With the help of these tools, we are able to give a geometrical interpretation and to generalize several results and constru...
Sachs [16] showed that a Boolean algebra is determined by its lattice of subalgebras.We establish the corresponding result for orthomodular lattices. We show that an orthomodular lattice L is determin...
Solutions of matrix NLS systems and their discretisations: A unified treatment
matrix NLS difference equations bidifferential graded algebra
2010/4/1
Using a bidifferential graded algebra approach to integrable partial differential or difference equations, a unified treatment of continuous, semi-discrete (Ablowitz-Ladik) and fully discrete matrix N...
一类变时滞微分代数方程单支方法的收敛性
单支方法 微分代数方程 变时滞
2009/10/23
B-收敛和D-收敛的概念被推广到了变时滞微分代数方程问题,给出了$D_A$-收敛的定义,讨论了该类问题的$D_A$-收敛性,并给出了相应的误差估计,证明了如果G-稳定的单支方法对于常微分方程初值问题在经典意义下是p阶相容的且$\frac{\beta _k}{\alpha_k}>0$,那么具有线性插值过程的该方法是p阶$D_A$-收敛的,这里p=1或2.
随机Lipschitz条件下BSDE解的连续性质
随机Lipschitz条件 倒向随机微分方程 连续性质
2012/11/22
论述了在随机Lipschitz条件下倒向随机微分方程解的性质.通过解的先验估计，分别得到了在随机Lipschitz条件下倒向随机微分方程的解关于终端值和生成元的连续性质.
分数阶微分方程多点边值问题的正解
分数阶微分方程 多点边值问题 正解 不动点
2012/11/22
研究分数阶微分方程多点边值问题正解的存在性,利用动点定理,得到了边值问题至少存在1个正解和3个正解的充分条件.
一类微分代数系统的受控不变分布及其不变性
微分代数系统 受控不变分布 输出核 算法
2009/9/21
针对一类非线性微分代数系统,利用M导数方法,给出了受控不变分布的概念,并讨论了此类微分代数系统受控不变分布的一些性质.给出了一个计算包含在系统输出核(kerE(h))内的最大受控不变分布的算法,同时讨论了该算法的一些性质.最后,给出一个例子说明如何利用给出的算法计算微分代数系统的包含在系统输出核内的最大受控不变分布.
一类非定常对流占优扩散问题差分-流线扩散法的后处理
差分-流线扩散法 后处理 对流占优
2009/9/18
讨论了一类非定常对流占优扩散方程的差分-流线扩散格式(FDSD),
利用插值后处理技术,提高了特殊网格下该FDSD格式在双线性元空间的精度,
从而按$
L^{\infty}(L^2({ \it \Omega})$ 模达到最优.
紧致DG模和Gorenstein DG代数
微分分次代数 Gorenstein微分分次代数 正则微分分次代数 Koszul微分分次代数 紧致微分分次模 Auslander-Reiten三角 amplitude\quad 投射维数
2009/8/31
证明同调有界的连通微分分次代数(简称为DG代数)上的紧致DG模的amplitude与基代数的amplitude的差恰为该DG模的投射维数. 由此可得非平凡的正则DG代数是同调无界的. 对正则DG代数$A$, 若它的同调代数$H(A)$是分次Koszul代数, 则证明$H(A)$有有限的整体维数; 如果把条件减弱为$A$是Koszul DG代数, 则给出了一个$H(A)$的整体维数为无限的例子. 对...