کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8897891 | 1631049 | 2018 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The subspaces spanned by Householder vectors associated with an orthogonal or a symplectic matrix
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موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
اعداد جبر و تئوری
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The subspaces spanned by Householder vectors associated with an orthogonal or a symplectic matrix The subspaces spanned by Householder vectors associated with an orthogonal or a symplectic matrix](/preview/png/8897891.png)
چکیده انگلیسی
The Cartan-Dieudonné-Scherk Theorem guarantees that every complex orthogonal matrix can be written as a product of matrices of the form HS,uâ¡IâuuTS, where S=I and uâCn satisfies uTu=2; moreover, every complex symplectic matrix can be written as a product of matrices of the form HS,uâ¡IâuuTS where S=J=[0IâI0] and uâ 0. Let a nonempty VâCn be given. The S-orthogonal complement of V is VS={zâCn|wTSz=0 for all wâV}. The image of an n-by-n complex matrix A is the set of all zâCn for which there is an xâCn such that z=Ax and is denoted by Im(A). Let S=I or S=J. Suppose that Q=HS,u1HS,u2â¯HS,ur. Set U=span{u1,u2,â¦,ur}. We study the relationship between Q, U, and Im(QâI). Suppose that r is minimal. We show that if dimâ¡(U)=r, then Im(QâI)=U. We also show that S(QâI) is not skew symmetric if and only if dimâ¡(U)=r. Let W=Im(QâI). We show that a relationship between W and WS determines the Jordan structure of Q, in particular, we show that (QâI)2=0 if and only if WâWS.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Linear Algebra and its Applications - Volume 546, 1 June 2018, Pages 37-49
Journal: Linear Algebra and its Applications - Volume 546, 1 June 2018, Pages 37-49
نویسندگان
Kennett L. Dela Rosa, Dennis I. Merino, Agnes T. Paras,