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arXiv math/0603531math.KTmath.RA
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双变代数K理论

Bivariant algebraic K-Theory

Guillermo Cortiñas, Andreas Thom

摘要:

我们展示了如何将算子代数K理论的方法应用于完全代数环境中,以定义固定单位基环H,kk_*(A,B)上的双变、矩阵稳定、同伦不变、可除的代数K理论,它是普适的,因为它唯一地映射到任何其他此类理论。kk与C有关。韦伯同伦代数K理论,KH。证明了:若H是交换的,A是H-双模的中心模,则kk_*(H,A)=KH_*(A).我们进一步表明,一些计算从算子代数KK-理论,如确切序列的Pimsner-Voiculescu,结转到代数kk。

英文摘要:

We show how methods from K-theory of operator algebras can be applied in a completely algebraic setting to define a bivariant, matrix-stable, homotopy-invariant, excisive K-theory of algebras over a fixed unital ground ring H, kk_*(A,B), which is universal in the sense that it maps uniquely to any other such theory. It turns out kk is related to C. Weibel's homotopy algebraic K-theory, KH. We prove that, if H is commutative and A is central as an H-bimodule, then kk_*(H,A)=KH_*(A). We show further that some calculations from operator algebra KK-theory, such as the exact sequence of Pimsner-Voiculescu, carry over to algebraic kk.

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