首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   32篇
  国内免费   14篇
  完全免费   12篇
  数学   58篇
  2017年   2篇
  2015年   2篇
  2014年   4篇
  2013年   1篇
  2011年   1篇
  2009年   2篇
  2008年   5篇
  2007年   8篇
  2006年   11篇
  2005年   4篇
  2004年   4篇
  2002年   1篇
  2001年   2篇
  2000年   2篇
  1999年   2篇
  1998年   3篇
  1997年   3篇
  1992年   1篇
排序方式: 共有58条查询结果,搜索用时 31 毫秒
1.
A nontrivial product in the stable homotopy groups of spheres   总被引:13,自引:0,他引:13  
Let A be the mod p Steenrod algebra for p an arbitrary odd prime. In 1962, Li-uleviciusdescribed hi and bk in Ext (A|*,*) (Zp, Zp) having bigrading (1,2pi(p-1))and (2,2pk+1 x(p - 1)), respectively. In this paper we prove that for p ≥ 7,n ≥ 4 and 3 ≤ s < p - 1, (Zp,Zp) survives to E∞ in the Adams spectral sequence, where q = 2(p - 1).  相似文献
2.
New Families in the Stable Homotopy of Spheres Revisited   总被引:4,自引:0,他引:4  
This paper constructs a new family in the stable homotopy of spheres π t −6 S represented by h n g 0γ3E 6 t 2 in the Adams spectral sequence which revisits the b n −1 g 0γ3-elements ∈π t −7 S constructed in [3], where t = 2p n (p− 1) + 6(p 2 + p + 1)(p− 1) and p≥ 7 is a prime, n≥ 4. Received October 7, 1998, Revised May 8, 2000, Accepted August 8, 2000.  相似文献
3.
球面稳定同伦群中的一族新元素   总被引:1,自引:1,他引:0       下载免费PDF全文
王玉玉  王俊丽 《数学杂志》2015,35(2):294-306
本文研究了球面稳定同伦群中元素的非平凡性.利用May谱序列,证明了在Adams谱序列E2项中存在乘积元素收敛到球面稳定同伦群的一族阶为p的非零元,此非零元具有更高维数的滤子.  相似文献
4.
Toric manifolds, a topological generalization of smooth projective toric varieties, are determined by an -dimensional simple convex polytope and a function from the set of codimension-one faces into the primitive vectors of an integer lattice. Their cohomology was determined by Davis and Januszkiewicz in 1991 and corresponds with the theorem of Danilov-Jurkiewicz in the toric variety case. Recently it has been shown by Buchstaber and Ray that they generate the complex cobordism ring. We use the Adams spectral sequence to compute the -theory of all toric manifolds and certain singular toric varieties.

  相似文献

5.
Denote the infinite-dimensional -graded Lie algebra defined by basis ei, i1, and relations [e1,ei]=ei+1 for all i2. We compute in this article the bracket structure on , and in relation to this, we establish that there are only finitely many true deformations of in each non-positive weight by constructing them explicitly. It turns out that in weight 0 one gets exactly the other two filiform Lie algebras.  相似文献
6.
决定球面稳定同伦群是同伦论中的核心问题之一,是非常重要的.该文证明:球面稳定同伦元素а1β1βs是一个阶为P的非平凡元素,其中P≥5是任意奇素数,1≤s≤P.  相似文献
7.
决定球面稳定同伦群是同伦论中的核心问题之一,是非常重要的.该文证明:球面稳定同伦元素α1β1βs是一个阶为p的非平凡元素,其中p≥5是任意奇素数,1≤s相似文献
8.
令p>5是素数,A表示模p Steenrod代数,S表示球谱的P局部化.首先给出了有关May谱序列的一些重要定理,然后作为应用,利用May谱序列和Adams谱序列发觉了一族新的非零的球面稳定元素.该新元素族次数为2(p-1)(pn sp2 sp s)-7,在Adams谱序列中由bn-190γs∈ExtAs 4,*(Zp,Zp)所表示,其中n≥4,3≤s相似文献
9.
In this paper we study the behaviour of the Lefschetz property under the blow-up construction. We show that it is possible to reduce the dimension of the kernel of the Lefschetz map if we blow up along a suitable submanifold satisfying the Lefschetz property. We use this, together with results about Massey products, to construct compact nonformal symplectic manifolds satisfying the Lefschetz property.

  相似文献

10.
This paper computes the Thorn map onγ2 and proves that it is represented by 2b2,0h1,2 in the ASS. The authors also compute the higher May differential of 62,0, from which it is proved thatγs(b0hn-h1bn-1) for 2≤s < p - 1 are permanent cycles in the ASS.  相似文献
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号