Purity of boundaries of open complex varieties

نویسندگان

چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Purity of boundaries of open complex varieties

We study the boundary of an open smooth complex algebraic variety U . We ask when the cohomology of the geometric boundary Z = X \U in a smooth compactification X is pure with respect to the mixed Hodge structure. Knowing the dimension of singularity locus of some singular compactification we give a bound for k above which the cohomology H(Z) is pure. The main ingredient of the proof is purity ...

متن کامل

Non Compact Boundaries of Complex Analytic Varieties

Let M be a smooth and oriented real submanifold of some n-complex manifold X, of dimension 2m+ 1. A natural question occurs, whether M is the boundary of an (m + 1)-complex submanifold of X. This problem, called the boundary problem, has been extensively treated over the past fifty years when M is compact. The case m = 0, in X = C, has been first solved by Wermer [W] in 1958. Later on, in 1975,...

متن کامل

Linking Numbers and Boundaries of Varieties 127

The intersection index at a common point of two analytic varieties of complementary dimensions in C is positive. This observation, which has been called a “cornerstone” of algebraic geometry ([GH, p. 62]), is a simple consequence of the fact that analytic varieties carry a natural orientation. Recast in terms of linking numbers, it is our principal motivation. It implies the following: Let M be...

متن کامل

Linking numbers and boundaries of varieties

The intersection index at a common point of two analytic varieties of complementary dimensions in Cn is positive. This observation, which has been called a “cornerstone” of algebraic geometry ([GH, p. 62]), is a simple consequence of the fact that analytic varieties carry a natural orientation. Recast in terms of linking numbers, it is our principal motivation. It implies the following: Let M b...

متن کامل

A Compactification of Open Varieties

In this paper we prove a general method to compactify certain open varieties by adding normal crossing divisors. This is done by showing that blowing up along an arrangement of subvarieties can be carried out. Important examples such as Ulyanov’s configuration spaces, spaces of holomorphic maps, etc., are covered. Intersection ring and (non-recursive) Hodge polynomials are computed. Further gen...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Singularities

سال: 2012

ISSN: 1949-2006

DOI: 10.5427/jsing.2012.4j