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Xian Zu Lin 《数学学报(英文版)》2011,27(5):863-870
Let G/P be a homogenous space with G a compact connected Lie group and P a connected subgroup of G of equal rank. As the rational cohomology ring of G/P is concentrated in even dimensions, for an integer k we can define the Adams map of type k to be l
k
: H*(G/P, ℚ) → H*(G/P, ℚ), l
k
(u) = k
i
u, u ∈ H
2i
(G/P, ℚ). We show that if k is prime to the order of the Weyl group of G, then l
k
can be induced by a self map of G/P. We also obtain results which imply the condition that k is prime to the order of the Weyl group of G is necessary. 相似文献
2.
林金坤 《数学物理学报(B辑英文版)》2009,29(5):1395-1404
This study proves a general result on convergence of α2x ∈ ExtA^s+2.tq+2q+1 (Zp, Zp) in the Adams spectral sequence and as a consequence, the study detects some new families in the stable homotopy groups of spheres πtq+2q-4S which is represented in the Adams spectral sequence by α2fn,α2fn,α2huhmhn ∈ ExtA^5,tq+2q+1(Zp,Zp) with tq=p^n+1q+2p^nq,2p^n+1q_P^nq,p^uq+p^mq+p^nq,respectively, where α2∈Extα^2,2q+1(Zp,Zp),fn∈ExtA^3,p^n+1q+2p^nq(Zp,Zp),fn∈ExtA^3,2p^n+2q+p^nq(Zp,Zp),hn∈ExtA^1,p^nq(Zp,Zp)and p≥5 is a prime,q=2(p=-1),n≥2. 相似文献
3.
4.
LIN Jinkun 《数学年刊B辑(英文版)》1999,20(1):93-102
1.IntroductionLetAbethemodSteenrodalgebraandSthespherespectrumlocalizedatanoddprime.TodeterminethestablehomotopygroupsofspheresisoneofthecentralprobleminhomotopytheoryOneofthemaintoolstoreachitistheAdamsspectralsequence(ASS)wherethe-termisthecohomolo... 相似文献
5.
In the present paper we obtain and extend the boundedness property of the Adams type for multilinear fractional integral operators. Also, we deal with the Olsen type inequality. 相似文献
6.
LI YANG 《数学研究通讯:英文版》2014,(2):183-192
Let G be a complete p-partite graph with 2 edges removed, p ≥ 7, which is intrinsically knotted. Let J represent any graph obtained from G by a finite sequence of △-Y exchanges and/or vertex expansions. In the present paper, we show that the removal of any vertex of J and all edges incident to that vertex produces an intrinsically linked graph. This result offers more intrinsically knotted graphs which hold for the conjecture presented in Adams' book (Adams C. The Knot Book. New York: W. H. Freeman and Company, 1994), that is, the removal of any vertex from an intrinsically knotted graph yields an intrinsically linked graph. 相似文献
7.
采用亚当斯熔融法(Adams fusion method)在钛网上包覆Ir O2催化剂,并将其用作固体聚合物电解质(SPE)电解器的阳极集电极,发现其可以显著降低电解过电位.通过X射线多晶衍射(XRD)和透射电子显微镜(TEM)分析发现,包裹在钛网上的Ir O2催化剂晶粒为2.0~3.0 nm,结晶度良好;交流阻抗谱(EIS)和循环伏安(CV)分析结果表明,改性的钛网集电极层可增加三相反应活性点,使三相反应通道由催化层延伸到集电极层,活性催化剂表面积增大,从而大幅度降低了活化阻抗,电解性能获得提升.通过对不同Ir O2催化剂负载量改性的钛网进行研究发现,随着钛网负载Ir O2量的增加,在相同电流密度下,极化曲线的过电位先减小后增加,当Ir O2负载量为1.38%(质量分数)时,电解池的过电位最低,在1 A/cm2电流密度下,过电位为2.028 V. 相似文献
8.
XuAnZHAO 《数学学报(英文版)》2004,20(6):1131-1134
In this paper the classification of maps from a simply connected space X to a flag manifold G/T is studied. As an application, the structure of the homotopy set for self-maps of flag manifolds is determined. 相似文献
9.
Jin Kun Lin 《数学学报(英文版)》2008,24(3):471-490
This paper proves that, for any generator x∈ExtA^s,tq(Zp,Zp), if (1L ∧i)*Ф*(x)∈ExtA^s+1,tq+2q(H*L∧M, Zp) is a permanent cycle in the Adams spectral sequence (ASS), then b0x ∈ExtA^s+1,tq+q(Zp, Zp) also is a permenent cycle in the ASS. As an application, the paper obtains that h0hnhm∈ExtA^3,pnq+p^mq+q(Zp, Zp) is a permanent cycle in the ASS and it converges to elements of order p in the stable homotopy groups of spheres πp^nq+p^mq+q-3S, where p ≥5 is a prime, s ≤ 4, n ≥m+2≥4 and M is the Moore spectrum. 相似文献
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