Nonlinear Control Sy.. - Free

2.12. EXERCISES 63
Notes and References
J r1 = X2
Sl 22 = m21 - 12
J ±1 = X2
ll k,22
There are many good references for the material in this chapter. For a complete,
remarkably well-written account of vector spaces, see Halmos [33]. For general background
in mathematical analysis, we refer to Bartle [7], Maddox [51], and Rudin [62]. Section 2.9,
including Theorem 2.10, is based on Hirsch [32]. The material on existence and uniqueness of
the solution of differential equations can be found on most textbooks on ordinary differential
equations. We have followed References [32], [88] and [41]. See also References [59] and
[55].