Exercise 11 / page 27:
(a) The
http://dientuvietnam.net/cgi-bin/mimetex.cgi?SL\left(n\right). Prove that
http://dientuvietnam.net/cgi-bin/mimetex.cgi?SL\left(n\right) is a submanifold of
http://dientuvietnam.net/cgi-bin/mimetex.cgi?M\left(n\right) and thus is a Lie group.
(b) Check that the tangent space to
http://dientuvietnam.net/cgi-bin/mimetex.cgi?SL\left(n\right) at the identity matrix consists of all matrices with trace equal to zero.
Exercise 4 / page 32:
Let
http://dientuvietnam...n/mimetex.cgi?X and
http://dientuvietnam...n/mimetex.cgi?Z be tranversal submanifolds of
http://dientuvietnam.../mimetex.cgi?Y. Prove that if
http://dientuvietnam.net/cgi-bin/mimetex.cgi?X\stackrel{f}{\rightarrow}Y\stackrel{g}{\rightarrow}Z be a sequence of smooth maps of manifolds, and assume that
http://dientuvietnam...n/mimetex.cgi?g is tranversal to a submanifold
http://dientuvietnam...n/mimetex.cgi?W of http://dientuvietnam.net/cgi-bin/mimetex.cgi?Z. Show that http://dientuvietnam.net/cgi-bin/mimetex.cgi?f is tranversal to http://dientuvietnam.net/cgi-bin/mimetex.cgi?g^{-1}\left(W\right) if and only if http://dientuvietnam.net/cgi-bin/mimetex.cgi?W.
Exercise 10 / page 33:
Let http://dientuvietnam.net/cgi-bin/mimetex.cgi?x; that is, http://dientuvietnam.net/cgi-bin/mimetex.cgi?f(x)=x. If http://dientuvietnam.net/cgi-bin/mimetex.cgi?+1 is not an eigenvalue of http://dientuvietnam.net/cgi-bin/mimetex.cgi?x is called a Lefschetz fixed point of http://dientuvietnam.net/cgi-bin/mimetex.cgi?f. http://dientuvietnam.net/cgi-bin/mimetex.cgi?f is called a Lefschetz map if all its fixed points are Lefschetz. Prove that if http://dientuvietnam.net/cgi-bin/mimetex.cgi?X is compact and http://dientuvietnam.net/cgi-bin/mimetex.cgi?f is Lefschetz, the http://dientuvietnam.net/cgi-bin/mimetex.cgi?f has only finitely many fixed points.
Bài viết đã được chỉnh sửa nội dung bởi math_phd2010: 28-04-2006 - 04:18