Chern characters on compact Lie groups of low rank
Chern characters on compact Lie groups of low rank
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低阶紧李群上的陈省身特征
DOI:
10.18910/10102
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发表时间:
1985
影响因子:
0.4
通讯作者:
Takashi Watanabe
中科院分区:
文献类型:
--
作者:
Takashi Watanabe
Let G be a compact, simply connected, simple Lie group of rank /. G has / irreducible representations pj, ••-, ph whose highest weights are the fundamental weights a>ι, •••, ω/ respectively (see [19]). Then the representation ring R(G) of G is a polynomial algebra Z[pl9 •••, p/]. By the theorem of Hodgkin [16], the Z/2-graded ^-theory K*(G) of G is an exterior algebra A.z(β(pl)9 —, β(ρi)), where β: R(G)-+K*(G) is the map introduced in [16]. Therefore the Chern character ch: K*(G)-^>H*(G\ Q) is injective [5]. We may write