کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4602364 1631170 2008 31 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quivers, geometric invariant theory, and moduli of linear dynamical systems
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات اعداد جبر و تئوری
پیش نمایش صفحه اول مقاله
Quivers, geometric invariant theory, and moduli of linear dynamical systems
چکیده انگلیسی

We use geometric invariant theory and the language of quivers to study compactifications of moduli spaces of linear dynamical systems. A general approach to this problem is presented and applied to two well known cases: We show how both Lomadze’s and Helmke’s compactification arises naturally as a geometric invariant theory quotient. Both moduli spaces are proven to be smooth projective manifolds. Furthermore, a description of Lomadze’s compactification as a Quot scheme is given, whereas Helmke’s compactification is shown to be an algebraic Grassmann bundle over a Quot scheme. This gives an algebro-geometric description of both compactifications. As an application, we determine the cohomology ring of Helmke’s compactification and prove that the two compactifications are not isomorphic when the number of outputs is positive.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Linear Algebra and its Applications - Volume 428, Issues 11–12, 1 June 2008, Pages 2424-2454