کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5773326 | 1631064 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The eigenvector variety of a matrix pencil
ترجمه فارسی عنوان
انواع خاصی از یک مداد ماتریسی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
اعداد جبر و تئوری
چکیده انگلیسی
Let k be a field and n,a,b natural numbers. A matrix pencil P is given by n matrices of the same size with coefficients in k, say by (bÃa)-matrices, or, equivalently, by n linear transformations αi:kaâkb with i=1,â¦,n. We say that P is reduced provided the intersection of the kernels of the linear transformations αi is zero. If P is a reduced matrix pencil, a vector vâka will be called an eigenvector of P provided the subspace ãα1(v),â¦,αn(v)ã of kb generated by the elements α1(v),â¦,αn(v) is 1-dimensional. Eigenvectors are called equivalent provided they are scalar multiples of each other. The set ϵ(P) of equivalence classes of eigenvectors of P is a Zariski closed subset of the projective space P(ka), thus a projective variety. We call it the eigenvector variety of P. The aim of this note is to show that any projective variety arises as an eigenvector variety of some reduced matrix pencil.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Linear Algebra and its Applications - Volume 531, 15 October 2017, Pages 447-458
Journal: Linear Algebra and its Applications - Volume 531, 15 October 2017, Pages 447-458
نویسندگان
Claus Michael Ringel,