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1.
本文补充了文献[3]、[4]的结果,给出指数分布的两个新的性质.  相似文献   

2.
本文在复值连续函数空间中给出一类具有O一正则变化拟单调系数之三角组数的最佳逼近度的一个完备结果.特别是第 3节的定理 3.2,即使在实连续函数空间中亦是一个新的结论,而且也是 Xie与Zholl[6]的定理 2在一个方向上的本质推广.最后,在第4节给出一个应用.  相似文献   

3.
一类2~3p~n(p=3,7)阶群的构造   总被引:2,自引:0,他引:2  
本文利用超可解群的性质,通过群的扩张理论,利用一种新的证明方法解决了2~3p~n(p=3,7)阶群当sylow-p子群为循环群时的构造.  相似文献   

4.
黄本文 《数学杂志》2000,20(1):111-116
本文利用超可解群的性质,通过群的扩张理论,利用一种新的证明方法解决了2^3p^n(p=3,7)阶群当sylow-p子群来循环时的构造。  相似文献   

5.
参数Kleene系统中的广义重言式   总被引:81,自引:13,他引:68  
引入新的一组带对数p(p∈「0,1」的t-范∧p,t-余范∨p和蕴涵θp,讨论它们的基本性质。在此基础上参数Kleene系统Kp与三值Kleene系统K3,三值Lukasiewicz系统L3和经典二值系统B2关于(广义)重言式的相互关系,指出系统Kp对广义重言式而言是可判定的。  相似文献   

6.
Abel范畴中态射乘积诱导的短正合列及其应用   总被引:8,自引:0,他引:8  
李桃生 《数学学报》1995,38(6):732-737
本文给出了Abel范畴中态射乘积αβγ诱导的短正合列的立体交换图。其中共有7个3×3平面,30条线。每一条线(两端的零对象省略)都是一个短正合列.这些短正合列用到p-除环上的矩阵,可以导出一系列矩阵秩的恒等式,它不仅推广了域上矩阵秩的结果,还能得到一些新的关系式.  相似文献   

7.
利用一个新的比较结果和Monech不动点定理证明了Banach空间中非线性脉冲Volterra型积分方程整体解的存在性定理,并给出了对Banach空间中一阶脉冲微分方程初值问题的应用,改进了文(1-3)中的主要结果。  相似文献   

8.
三、一个猜想不等式已获证明中国科学院武汉数理所王振徐和郁在[1]中建立了一个新的三角形不等式:当n是奇数时.其中A、B、C是三角形的三内角陈计[2]注意到(1)中的等号对奇数n≥3并不总是取得到的,从而猜测,当n是大于1的奇数时,有不等式他还对n=3...  相似文献   

9.
李超英  于洪全 《应用数学》1998,11(4):114-116
本文证明了n维布尔矩阵维数的一个新的缺断区间为(2^n-2+2^n-3+2^n-4+2^n-5+2^n-7,2^n-2+2^n-3+2^n-4+2^n-5+2^n-6)。这一结果扩充了一些已知的结论。  相似文献   

10.
本文构造出了星色数为3+1/d,3+2(2d-1),3+3/(3d-1),和3+3/(3d-2)的一些平面图类,从而部分解决了Vince的问题.  相似文献   

11.
In this paper we develop a new efficient and stable Lagrangian numerical method for computing the evolution of 3D curves driven in the normal plane by a driving force and curvature. This new method contains asymptotically uniform tangential redistribution of grid points designed originally for 3D curve evolution in this paper which makes our computations stable and is crucial for the presented application. Together with the design of new tangentially stabilized algorithm for 3D evolving curves, we develop a new method for the fully automatic finding of the optimal trajectory of the camera in the virtual colonoscopy. The proposed method consists of three steps: 3D segmentation of the colon from CT images, finding an initial trajectory guess inside the segmented 3D subvolumes, and driving the initial 3D curve to its optimal position. To that goal, a suitable intrinsic advection-diffusion partial differential equation with a driving force is designed and solved numerically in fast and robust way in order to find a smooth uniformly discretized 3D curve representing the ideal path of the camera in the virtual colonoscopy.  相似文献   

12.
为了降低经典的三阶加权本质无振荡(WENO)格式的数值耗散,提出了一种新的三阶WENO格式的修正模板近似方法.改进了经典WENO-JS格式中各候选模板上数值通量的一阶多项式逼近,通过加入二次项使模板逼近达到三阶精度.计算了相应的候选通量,并且通过引入可调函数φ(x),使得新的格式具有ENO性质.最后给出了一系列数值算例,证明了该方法的有效性.  相似文献   

13.
This paper describes new bounding methods for the axial three-index assignment problem (3AP). For calculating 3AP lower bounds, we use a projection method followed by a Hungarian algorithm, based on a new Lagrangian relaxation. We also use a cost transformation scheme, which iteratively transforms 3AP costs in a series of equivalent 3APs, which provides the possibility of improving the 3AP lower bound. These methods produce efficiently computed relatively tight lower bound.  相似文献   

14.
Some new inequalities of Hermite-Hadamard's integration are established.As for as inequalities about the righthand side of the classical Hermite-Hadamard's integral inequality refined by S Qaisar in [3],a new upper bound is given.Under special conditions,the bound is smaller than that in [3].  相似文献   

15.
16.
We construct new concrete examples of small knots in closed 3-manifolds. That is to say, we construct new examples of compact 3-manifolds with boundary a single torus in which there is no closed embedded essential surface.  相似文献   

17.
In this paper, a new concept of η-proximal mapping for a proper subdifferentiable functional (which may not be convex) on a Banach space is introduced. An existence and Lipschitz continuity of the η-proximal mapping are proved. By using properties of the η-proximal mapping, a new class of general mixed variational inequalities is introduced and studied in Banach spaces. An existence theorem of solutions is established and a new iterative algorithm for solving the general mixed variational inequality is suggested. A convergence criteria of the iterative sequence generated by the new algorithm is also given.  相似文献   

18.
Some new sixth-order compact finite difference schemes for Poisson/Helmholtz equations on rectangular domains in both two- and three-dimensions are developed and analyzed. Different from a few sixth-order compact finite difference schemes in the literature, the finite difference and weight coefficients of the new methods have analytic simple expressions. One of the new ideas is to use a weighted combination of the source term at staggered grid points which is important for grid points near the boundary and avoids partial derivatives of the source term. Furthermore, the new compact schemes are exact for 2D and 3D Poisson equations if the solution is a polynomial less than or equal to 6. The coefficient matrices of the new schemes are $M$-matrices for Helmholtz equations with wave number $K≤0,$ which guarantee the discrete maximum principle and lead to the convergence of the new sixth-order compact schemes. Numerical examples in both 2D and 3D are presented to verify the effectiveness of the proposed schemes.  相似文献   

19.
Some new inequalities of Hermite-Hadamard's integration are established. As for as inequalities about the righthand side of the classical Hermite-Hadamard's integral inequality refined by S Qaisar in [3], a new upper bound is given. Under special conditions,the bound is smaller than that in [3].  相似文献   

20.
This paper contains new representations of the 3D elasticity and thermoelasticity problems, expressed in terms of regular quaternion functions, which in 3D and 4D have properties analogous to those of complex analytical functions in 2D. The known and some new results, described in the paper, are used to formulate boundary 3D problems, related to the theory. The formulae obtained are very similar to those given by Muskhelishvili for 2D boundary problems. The obtained representations can be used for development of a 3D boundary element method in numerical analysis.  相似文献   

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