Homology sequence and excision theorem for Euler class group

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود 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

Symplectic Floer Homology and the Mapping Class Group

We consider symplectic Floer homology in the lowest nontrivial dimension, that is to say, for area-preserving diffeomorphisms of surfaces. Particular attention is paid to the quantum cap product.

متن کامل

The Noether-lefschetz Theorem for the Divisor Class Group

Let X be a normal projective threefold over a field of characteristic zero and |L| be a base-point free, ample linear system on X. Under suitable hypotheses on (X, |L|), we prove that for a very general member Y ∈ |L|, the restriction map on divisor class groups Cl (X)→ Cl (Y ) is an isomorphism. In particular, we are able to recover the classical Noether-Lefschetz theorem, that a very general ...

متن کامل

Homology cylinders: an enlargement of the mapping class group

We consider a homological enlargement of the mapping class group, defined by homology cylinders over a closed oriented surface (up to homology cobordism). These are important model objects in the recent Goussarov-Habiro theory of finite-type invariants of 3-manifolds. We study the structure of this group from several directions: the relative weight filtration of Dennis Johnson, the finite-type ...

متن کامل

Mod 2 Homology of the Stable Spin Mapping Class Group

We compute the mod 2 homology of spin mapping class groups in the stable range. In earlier work [G] we computed the stable mod p homology of the oriented mapping class group, and the methods and results here are very similar. The forgetful map from the spin mapping class group to the oriented mapping class groups induces a homology isomorphism for odd p but for p = 2 it is far from being an iso...

متن کامل

MOD p HOMOLOGY OF THE STABLE MAPPING CLASS GROUP

We calculate the homology H∗(Γg,n;Fp) of the mapping class group Γg,n in the stable range. The calculation is based on Madsen and Weiss’ proof of the “Generalised Mumford Conjecture”: Γg,n has the same homology as a component of the space Ω∞CP∞ −1 in the stable range.

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: Pacific Journal of Mathematics

سال: 2011

ISSN: 0030-8730,0030-8730

DOI: 10.2140/pjm.2011.249.237