共查询到19条相似文献,搜索用时 171 毫秒
1.
设ψ : D → Ω 是一个单叶函数, 利用Schwarzian 导数, 本文获得了log ψ′ 属于QK 空间的一个充要条件. 此外, 本文运用了一个几何条件来刻画QK 空间. 相似文献
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本文首先给出(α,β)-γ开集定义,获得了(α,β)-γ开集性质;然后引入了(α,β)-γ-Ti空间和(α,β)-γ-Ti*空间概念(i=0,1/2,1,2,5/2),并得到它们更广泛的拓扑性质. 相似文献
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在C60单晶(111)解理面上制备出厚度约30 nm的K3C60单晶膜.利用同步辐射光源,在低温下(约150K)测量了样品法向发射的角分辨光电子谱.观察到K3C60导带和价带明显的色散.导带的光电子谱峰可清晰分辨出4个子峰,这些子峰的最大色散超过0.5eV,并且色散曲线与K3C60的一维无序晶体结构模型下的能带理论基本吻合,只是子带间隔差异较大. 相似文献
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本文给出了一个确定实二次域的整元环上的K2群的2-Sylow子群的方法,进而由此确定了一批实二次域的整元环上的K2群的2-Sylow子群的结构。本文中的方法对于代数整数环上K2群的2-Sylow子群为初等Abel和非初等Abel的情形都是适用的,而在此以前已有的方法和结果大都限制在初等Abel的范围。 相似文献
10.
本文定义了一个由范畴 RMRl到范畴A Grn0 的函子G,并证明了函子G保持分量正合及全正合,关于范畴AGGrn0 证明了定理: 相似文献
11.
The decomposition of the complete graph Kv into Kr×Kc's, the products of Kr and Kc,is originated from the use of DNA library screening. In this paper, we consider the case where r=2 and c = 5, and show that such a decomposition exists if and only if v ≡ 1 (mod 25). 相似文献
12.
Marc Levine 《K-Theory》1995,9(5):443-501
We verify the weight-two portion of the Quillen-Lichtenbaum conjectures, relating the modn weight-twoK-groups of a field with the appropriate étale cohomology groups. This extends the work of Merkurjev and Suslin onK
2 of a field, and the works of Suslin and the author on the indecomposableK
3 of a field.Partially supported by the NSF. 相似文献
13.
David R. Pitts 《K-Theory》1989,2(6):737-752
In this paper we compute the K
0 group of any nest subalgebra of (). 相似文献
14.
Tate's algorithm for computing O for rings of integers in a number field has been adapted for the computer and gives explicit generators for the group and sharp bounds on their order – the latter, together with some structural results on the p-primary part of O due to Tate and Keune, gives a proof of its structure for many number fields of small discriminants, confirming earlier conjectural results. For the first time, tame kernels of non-Galois fields are obtained. 相似文献
15.
For a noncommutative Zariski ringR with associated graded ringG(R) of finite global dimension there is an injectionK
o(R) K
o
(G(R)). The result applies to certain rings of differential operators, in particular to the ring of germs of microlocal differential operators that also provides an example of a nonpositively filtered Zariski ring.Research fellow at UIA, supported by a grant from the Province of Antwerp.Supported by an NFWO grant. 相似文献
16.
In this paper we consider what happens when Adams self maps are modified by adding certain unstable maps. The unstable maps which are added are trivial after a single suspension. We can choose the modification so that the maps are still K-theory equivalences but the loops on the map are no longer K-theory equivalences. As a corollary we note that the maps are K-theory equivalences but not v
1-periodic equivalences. Another consequence is the behavior of the cobar spectral sequences for generalized homology theories. Tamaki shows that in certain cases a cobar-type spectral sequence for generalized homology theories is well behaved. The maps we construct give an example where despite the connectivity of the spaces the cobar spectral sequence is still poorly behaved. Finally we use our maps to construct spaces whose Bousfield class is distinct from the cofiber of the Adams map but which becomes the same after one suspension. 相似文献
17.
Marc Levine 《K-Theory》1992,6(2):113-175
LetR be a commutative, semi-local ring,I
1, ...,I
s
ideals. In this paper, we define therelative Milnor K-groups of (R;I
1, ...,I
s
),K
p
M
(R;I
1, ...,I
s
), and show that these groups have many of the properties of the usual MilnorK-groups of a field. In particular, assuming a weak condition on the ideals, we show thatK
p
M
(R;I
1, ...,I
s
) is isomorphic to the weightp portion of the relative QuillenK-groupK
p
(R;I
1, ...,I
s
), after inverting (p–1)!. We also define the relative group homology of GL
n
(R;I
1, ...,I
s
), and show thatK
p
M
(R;I
1, ...,I
s
) is isomorphic toH
p
(GLp(R;I
1, ...,I
s
))/Im(H
p
(GL
p–1 (R;I
1, ...,I
s
))). Finally, we consider a generalization to the relative setting of Kato's conjecture asserting that the Galois symbol gives an isomorphism fromK
p
M
(F)/l
v
to
, and show that this relative version of Kato's conjecture implies the Quillen-Lichtenbaum conjectures asserting the Chern class:
相似文献
18.
Roozbeh Hazrat 《K-Theory》2002,27(4):293-328
Employing Bak's dimension theory, we investigate the nonstable quadratic K-group K
1,2n
(A, ) = G
2n
(A, )/E
2n
(A, ), n 3, where G
2n
(A, ) denotes the general quadratic group of rank n over a form ring (A, ) and E
2n
(A, ) its elementary subgroup. Considering form rings as a category with dimension in the sense of Bak, we obtain a dimension filtration G
2n
(A, )
G
2n
0(A, )
; G
2n
1(A, )
...
E
2n
(A, ) of the general quadratic group G
2n
(A, ) such that G
2n
(A, )/G
2n
0(A, ) is Abelian, G
2n
0(A, )
G
2n
1(A, )
... is a descending central series, and G
2n
d(A)(A, ) = E
2n
(A, ) whenever d(A) = (Bass–Serre dimension of A) is finite. In particular K
1,2n
(A, ) is solvable when d(A) < . 相似文献
19.
This paper merges some classifications of G-M-type Banach spaces simplifically, discusses the condition of K
0(B(X)) = 0 for operator algebra B(X) on a Banach space X, and obtains a result to improve Laustsen's sufficient condition, gives an example to show that X ≈ X
2 is not a sufficient condition of K
0(B(X)) = 0. 相似文献
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