This chapter presents some basic mathematical fundamentals for adaptive control theory. Vector and matrix norms are defined. The existence and uniqueness of a solution of a nonlinear differential equation are stated by the Cauchy theorem and the Lipschitz condition. Positive-valued functions are an important class of functions in adaptive control theory. Positive definiteness of a real-valued function is defined. The properties of a positive-definite matrix are given.
CITATION STYLE
Nguyen, N. T. (2018). Mathematical preliminaries. In Advanced Textbooks in Control and Signal Processing (pp. 31–46). Springer International Publishing. https://doi.org/10.1007/978-3-319-56393-0_3
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