کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1898927 1044803 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characteristic classes of bad orbifold vector bundles
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Characteristic classes of bad orbifold vector bundles
چکیده انگلیسی

We show that every bad orbifold vector bundle can be realized as the restriction of a good orbifold vector bundle to a suborbifold of the base space. We give an explicit construction of this result in which the Chen–Ruan orbifold cohomologies of the two base spaces are isomorphic (as additive groups). This construction is used to indicate an extension of the Chern–Weil construction of characteristic classes to bad orbifold vector bundles. In particular, we apply this construction to the orbifold Euler class and demonstrate that it acts as an obstruction to the existence of nonvanishing sections.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Geometry and Physics - Volume 57, Issue 11, October 2007, Pages 2365–2371
نویسندگان
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