全文获取类型
收费全文 | 1542篇 |
免费 | 17篇 |
国内免费 | 3篇 |
专业分类
化学 | 24篇 |
晶体学 | 1篇 |
力学 | 3篇 |
数学 | 1429篇 |
物理学 | 105篇 |
出版年
2023年 | 1篇 |
2022年 | 4篇 |
2021年 | 3篇 |
2020年 | 4篇 |
2019年 | 29篇 |
2018年 | 20篇 |
2017年 | 16篇 |
2016年 | 5篇 |
2015年 | 17篇 |
2014年 | 34篇 |
2013年 | 66篇 |
2012年 | 66篇 |
2011年 | 93篇 |
2010年 | 73篇 |
2009年 | 85篇 |
2008年 | 112篇 |
2007年 | 107篇 |
2006年 | 111篇 |
2005年 | 66篇 |
2004年 | 56篇 |
2003年 | 56篇 |
2002年 | 26篇 |
2001年 | 23篇 |
2000年 | 25篇 |
1999年 | 21篇 |
1998年 | 32篇 |
1997年 | 29篇 |
1996年 | 58篇 |
1995年 | 48篇 |
1994年 | 58篇 |
1993年 | 28篇 |
1992年 | 32篇 |
1991年 | 7篇 |
1990年 | 22篇 |
1989年 | 15篇 |
1988年 | 6篇 |
1987年 | 15篇 |
1986年 | 5篇 |
1985年 | 11篇 |
1984年 | 5篇 |
1983年 | 5篇 |
1982年 | 13篇 |
1981年 | 7篇 |
1980年 | 10篇 |
1979年 | 3篇 |
1978年 | 7篇 |
1977年 | 13篇 |
1976年 | 13篇 |
1975年 | 1篇 |
排序方式: 共有1562条查询结果,搜索用时 21 毫秒
1.
2.
Jamil Chaker 《Mathematische Nachrichten》2019,292(11):2316-2337
We consider systems of stochastic differential equations of the form for with continuous, bounded and non‐degenerate coefficients. Here are independent one‐dimensional stable processes with . In this article we research on uniqueness of weak solutions to such systems by studying the corresponding martingale problem. We prove the uniqueness of weak solutions in the case of diagonal coefficient matrices. 相似文献
3.
4.
General dual curvature measures have recently been introduced by Lutwak, Yang and Zhang [24]. These new measures unify several other geometric measures of the Brunn–Minkowski theory and the dual Brunn–Minkowski theory. dual curvature measures arise from qth dual intrinsic volumes by means of Alexandrov-type variational formulas. Lutwak, Yang and Zhang [24] formulated the dual Minkowski problem, which concerns the characterization of dual curvature measures. In this paper, we solve the existence part of the dual Minkowski problem for and , and we also discuss the regularity of the solution. 相似文献
5.
6.
Paweł SZAFRANIEC 《数学物理学报(B辑英文版)》2017,37(4):1048-1060
In this paper we prove the existence and uniqueness of a weak solution for a dynamic electo-viscoelastic problem that describes a contact between a body and a foundation. We assume the body is made from thermoviscoelastic material and consider nonmonotone boundary conditions for the contact. We use recent results from the theory of hemivariational inequalities and the fixed point theory. 相似文献
7.
In continuation of Part I, we study translative integral formulas for certain translation invariant functionals, which are defined on general convex bodies. Again, we consider local extensions and use these to show that the translative formulas extend to arbitrary continuous and translation invariant valuations. Then, we discuss applications to Poisson particle processes and Boolean models which contain, as a special case, some new results for flag measures. 相似文献
8.
Tessellations of that use convex polyhedral cells to fill the space can be extremely complicated, especially if they are not “facet‐to‐facet”, that is, if the facets of a cell do not necessarily coincide with the facets of that cell's neighbours. In a recent paper 15 , we have developed a theory which covers these complicated cases, at least with respect to their combinatorial topology. The theory required seven parameters, three of which suffice for facet‐to‐facet cases; the remaining four parameters are needed for the awkward adjacency concepts that arise in the general case. This current paper establishes constraints that apply to these seven parameters and so defines a permissible region within their seven‐dimensional space, a region which we discover is not bounded. Our constraints in the relatively simple facet‐to‐facet case are also new. 相似文献
9.
From Crofton's formula for Minkowski tensors we derive stereological estimators of translation invariant surface tensors of convex bodies in the n‐dimensional Euclidean space. The estimators are based on one‐dimensional linear sections. In a design based setting we suggest three types of estimators. These are based on isotropic uniform random lines, vertical sections, and non‐isotropic random lines, respectively. Further, we derive estimators of the specific surface tensors associated with a stationary process of convex particles in the model based setting. 相似文献
10.
Let M be a matroid on E, representable over a field of characteristic zero. We show that h-vectors of the following simplicial complexes are log-concave:
- 1.
- The matroid complex of independent subsets of E. 相似文献