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arXiv 0811.2261math.AGmath.AT
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定向双变理论,我

Oriented bivariant theories, I

Shoji Yokura

摘要:

1981年W. Fulton和R.麦克弗森引入了双变理论(BT)的概念,这是协变理论和逆变理论的复杂统一。这是为了研究奇异空间。2001年M. Levine和F.莫瑞尔引入了代数配边的概念,这是一个具有几何类型乘积的通用Borel-Moore函子(OBMF),试图更好地理解V. Voevodsky的(高等)代数配边。本文引入了有向双变理论的概念,它的一个特例是有向Borel-Moore函子的乘积。本文是试图从双变量理论的观点理解Levine-Morel的代数配边的系列文章的第一篇,它的第一步是引入OBT作为BT和OBMF的统一。

英文摘要:

In 1981 W. Fulton and R. MacPherson introduced the notion of bivariant theory (BT), which is a sophisticated unification of covariant theories and contravariant theories. This is for the study of singular spaces. In 2001 M. Levine and F. Morel introduced the notion of algebraic cobordism, which is a universal oriented Borel-Moore functor with products (OBMF) of geometric type, in an attempt to understand better V. Voevodsky's (higher) algebraic cobordism. In this paper we introduce a notion of oriented bivariant theory (OBT), a special case of which is nothing but the oriented Borel-Moore functor with products. The present paper is a first one of the series to try to understand Levine-Morel's algebraic cobordism from a bivariant-theoretical viewpoint, and its first step is to introduce OBT as a unification of BT and OBMF.

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