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arXiv 2609.01473math.ATmath.KT

正合∞-范畴的Keller序列

Keller sequences of exact $\infty$-categories

Yonatan Harpaz, Daniel Marlowe

AI总结:

该研究推广稳定∞-范畴的Verdier序列为正合∞-范畴的Keller序列,证明代数K-理论对其局部化,据此给出Quillen分解定理的范畴论证明,并利用Keller的映射空间刻画推导Keller定理的另一证明。

AI中文摘要:

我们研究正合∞-范畴的∞-范畴中的一族纤射-余纤射序列,将其命名为Keller序列,这是稳定∞-范畴的Verdier序列概念的推广。我们证明代数K-理论相对于该族序列是局部化的,并利用这一点给出Quillen分解定理的一个范畴论证明。我们的论证依赖于Keller所研究的特殊包含的映射空间刻画,由此我们推导出Keller定理的另一个证明,即这类包含在稳定包上诱导完全忠实函子。

英文摘要:

We study a family of fibre-cofibre sequences in the $\infty$-category of exact $\infty$-categories, which we call Keller sequences, generalising the notion of Verdier sequences of stable $\infty$-categories. We show that algebraic K-theory is localising with respect to this family, and use this to give a categorical proof of Quillen's resolution theorem. Our arguments hinge upon a mapping space characterisation of special inclusions as studied by Keller, from which we deduce another proof of Keller's theorem that such inclusions induce fully faithful functors on stable envelopes.

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