共查询到20条相似文献,搜索用时 0 毫秒
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Let k be , or , and set . We compute K2(A) and K3(A). Our method is to construct a map and compare this to a localization sequence.We give three applications. We show that ? accounts for the primitive elements in K2(A), and compare our results to computations of Bloch [1] for group schemes. Secondly, we consider the problem of basepoint independence, and indicate the interplay of geometry upon the K-theory of affine schemes obtained by glueing points of Spec(A). Third, we can iterate the construction to compute the K-theory of the torus ring A ?kA. 相似文献
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Charles A. Weibel 《Journal of Pure and Applied Algebra》1980,18(3):333-345
In this note is given an explicit computation method to decide about the minimality of a word in the free group of rank two. A cohomological use of this method is to yield words defining one relator duality groups. 相似文献
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Jan van Mill 《Topology and its Applications》1982,13(2):123-132
The reduced measure algebra is used to construct, under CH, a hereditarily Lindelöf separable K1-space X which is not a K0-space. 相似文献
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Kenichiro Kimura 《Journal of Number Theory》2003,101(1):1-12
We present certain norm-compatible systems in K2 of function fields of some CM elliptic curves. We demonstrate that these systems have some properties similar to elliptic units. 相似文献
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Robin Thomas 《Journal of Combinatorial Theory, Series B》1985,38(3):240-247
It is proved that given an infinite sequence G1, G2, G3,…, of series-parallel graphs there are indices i < j such that Gj contains an induced subgraph contractable onto Gi. An example is given showing that for planar graphs the preceding theorem fails. 相似文献
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Mark Jungerman 《Journal of Combinatorial Theory, Series B》1975,18(1):53-58
The minimal genus of Kn ? K2 is determined using the method of index two current graphs. 相似文献
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For n = 12s + 9 (s ≥ 4) we imbed Kn ? K6 in an orientable surface of genus 12s2 + 11s. 相似文献
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David Handelman 《Journal of Pure and Applied Algebra》1976,8(1):105-118
If R is any (noncommutative, von Neumann) regular ring with 2 invertible, then K1 of the free (noncommuting) R-algebra on a set X is canonically isomorphic to K1(R). If R is unit-regular, then K1(R) is just the abelianization of the group of units of R. Some examples are computed. 相似文献
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Nursel Erey 《Journal of Pure and Applied Algebra》2019,223(7):3071-3080
Let G be a -free graph with edge ideal . We show that has linear resolution for every . Also, we show that every power of the vertex cover ideal of G has linear quotients. As a result, we describe the Castelnuovo–Mumford regularity of powers of in terms of the maximum degree of G. 相似文献
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A.E. Brouwer 《Journal of Combinatorial Theory, Series A》1979,26(3):278-297
In this paper we determine the maximum cardinality of a packing of K4's into Kn, that is, construct optimal constant weight codes with weight 4 and minimum distance 6. 相似文献
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Seán Dineen 《Journal of Functional Analysis》1983,52(2):205-218
It is shown that every holomorphic function on c0 which is bounded on weakly compact sets is bounded on bounded sets. 相似文献
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