全文获取类型
收费全文 | 555篇 |
免费 | 67篇 |
国内免费 | 70篇 |
专业分类
化学 | 31篇 |
力学 | 32篇 |
综合类 | 9篇 |
数学 | 504篇 |
物理学 | 116篇 |
出版年
2024年 | 2篇 |
2023年 | 12篇 |
2022年 | 18篇 |
2021年 | 14篇 |
2020年 | 25篇 |
2019年 | 22篇 |
2018年 | 18篇 |
2017年 | 14篇 |
2016年 | 20篇 |
2015年 | 16篇 |
2014年 | 23篇 |
2013年 | 48篇 |
2012年 | 24篇 |
2011年 | 20篇 |
2010年 | 13篇 |
2009年 | 32篇 |
2008年 | 25篇 |
2007年 | 44篇 |
2006年 | 35篇 |
2005年 | 22篇 |
2004年 | 30篇 |
2003年 | 28篇 |
2002年 | 30篇 |
2001年 | 26篇 |
2000年 | 18篇 |
1999年 | 18篇 |
1998年 | 16篇 |
1997年 | 26篇 |
1996年 | 10篇 |
1995年 | 11篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1992年 | 5篇 |
1991年 | 4篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 6篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 2篇 |
1978年 | 2篇 |
排序方式: 共有692条查询结果,搜索用时 15 毫秒
81.
B. G. Vakulov 《Mathematical Notes》2006,80(5-6):645-657
In this paper, we study the images of operators of the type of spherical potential of complex order and of spherical convolutions with kernels depending on the inner product and having a spherical harmonic multiplier with a given asymptotics at infinity. Using theorems on the action of these operators in Hölder-variable spaces, we construct isomorphisms of these spaces. In Hölder spaces of variable order, we study the action of spherical potentials with singularities at the poles of the sphere. Using stereographic projection, we obtain similar isomorphisms of Hö lder-variable spaces with respect to n-dimensional Euclidean space (in the case of its one-point compactification) with some power weights. 相似文献
82.
83.
I. B. Simonenko 《Mathematical Notes》2005,78(1-2):239-250
We study the asymptotic behavior of the averaged f-trace of a truncated generalized multidimensional discrete convolution operator as the truncation domain expands. By definition, the averaged f-trace of a finite-dimensional operator A is equal to
, where n is the dimension of the space in which the operator A acts, the set of numbers γk, k = 1,..., n, is the complete collection of eigenvalues of the operator A, counting multiplicity; a generalized discrete convolution is an operator from the closure of the algebra generated by discrete convolution operators and by operators of multiplication by functions admitting a continuous continuation onto the sphere at infinity.__________Translated from Matematicheskie Zametki, vol. 78, no. 2, 2005, pp. 265–277.Original Russian Text Copyright © 2005 by I. B. Simonenko. 相似文献
84.
We define a functional analytic transform involving the Chebyshev polynomials Tn(x), with an inversion formula in which the Möbius function μ(n) appears. If s∈C with Re(s)>1, then given a bounded function from [−1,1] into C, or from C into itself, the following inversion formula holds:
85.
徐能 《数学物理学报(A辑)》2011,31(1):216-228
该文引进和研究了一类含有Dziok-Srivastava算子的新的多叶解析函数. 得到了这一函数类中的一些有趣的性质, 如包含关系, 卷积性质等. 这些结果改进和拓展了早期的一些工作. 同时也得到了其他一些新的结果. 相似文献
86.
In this paper, we define the quadratic-phase Fourier wavelet transform (QPFWT) and discuss its basic properties including convolution for QPFWT. Further, inversion formula and the Parseval relation of QPFWT are also discussed. Continuity of QPFWT on some function spaces are studied. Moreover, some applications of quadratic-phase Fourier transform (QPFT) to solve the boundary value problems of generalized partial differential equations. 相似文献
87.
ABSTRACTIn this paper, we introduce a discrete convolution involving both the Fourier sine and cosine series. We study Young's type inequality and a discrete transform related to this convolution and solve in closed form a class of discrete Toeplitz plus Hankel equations. 相似文献
88.
In this paper, we first introduce the concept of the ?-product on function space. We then proceed to use this concept to obtain several integration formulas. In addition, we establish various relationships which exist. Also, we establish the relationships among the ?-product, the generalized convolution product and the first variation. 相似文献
89.
90.
A linear operator associated with the Mittag-Leffer function and related conformal mappings 下载免费PDF全文
In the present paper, we introduce a linear operator associated with the Mittag-Leffler function. Some convolution properties of meromorphic functions involving this operator are given. 相似文献