arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1409.4372math.KTmath.AGmath.AT
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algebraic varieties的框架动机(根据V. Voevodsky)

Framed motives of algebraic varieties (after V. Voevodsky)

Grigory Garkusha, Ivan Panin

摘要:

利用Voevodsky的框架对应理论,我们引入并研究了代数簇的框架动机。它们是构造任何光滑概形$X\in Sm/k$的悬浮$\mathbb P^1$ -谱的显式准隐式motivic替换的主要计算工具。此外,还证明了每一项都是$X$的一个扭框架动机的双谱$$(M_{fr}(X),M_{fr}(X)(1),M_{fr}(X)(2),\ldots),$$,具有$X$的悬置双谱的动机同伦型.进一步,利用框架对应空间给出了无限$\mathbb P^1$ -loop motivic空间的显式计算.我们还介绍了大框架动机的双谱,并表明他们转换经典的Morel-Voevodsky动机稳定同伦理论到一个等价的局部理论的框架双谱。作为拓扑应用,证明了当基场$k$代数闭于特征零点时,在$pt$上求出的点$pt=Spec(k)$的框架运动$M_{fr}(pt)(pt)$是经典球谱的拟隐式模型.

英文摘要:

Using the theory of framed correspondences developed by Voevodsky, we introduce and study framed motives of algebraic varieties. They are the major computational tool for constructing an explicit quasi-fibrant motivic replacement of the suspension $\mathbb P^1$-spectrum of any smooth scheme $X\in Sm/k$. Moreover, it is shown that the bispectrum $$(M_{fr}(X),M_{fr}(X)(1),M_{fr}(X)(2),\ldots),$$ each term of which is a twisted framed motive of $X$, has motivic homotopy type of the suspension bispectrum of $X$. Furthermore, an explicit computation of infinite $\mathbb P^1$-loop motivic spaces is given in terms of spaces with framed correspondences. We also introduce big framed motives of bispectra and show that they convert the classical Morel--Voevodsky motivic stable homotopy theory into an equivalent local theory of framed bispectra. As a topological application, it is proved that the framed motive $M_{fr}(pt)(pt)$ of the point $pt=Spec(k)$ evaluated at $pt$ is a quasi-fibrant model of the classical sphere spectrum whenever the base field $k$ is algebraically closed of characteristic zero.

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