Homological Transcendence Degree
Homological Transcendence Degree
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DOI:
10.1017/s0024611505015698
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发表时间:
2004-12
影响因子:
1.8
通讯作者:
Amnon Yekutieli;James J. Zhang
中科院分区:
文献类型:
--
作者:
Amnon Yekutieli;James J. Zhang
Let D be a division algebra over a base field k. The homological transcendence degree of D, denoted by Htr; D, is defined to be the injective dimension of the algebra D ⊗ k D°. We show that Htr has several useful properties which the classical transcendence degree has. We extend some results of Resco, Rosenberg, Schofield and Stafford, and compute Htr for several classes of division algebras. The main tool for the computation is Van den Bergh's rigid dualizing complex. 2000 Mathematics Subject Classification 16A39, 16K40, 16E10.