PPT-ECE 417 Lecture 5: Eigenvectors

Mark HasegawaJohnson 9122017 Content Linear transforms Eigenvectors Eigenvalues Symmetric matrices Symmetric positive definite matrices Covariance matrices Principal components Linear Transforms. 41 No 1 pp 135147 The Discrete Cosine Transform Gilbert Strang Abstract Each discrete cosine transform DCT uses real basis vectors whose components are cosines In the DCT4 for example the th component of is cos These basis vectors are orthogonal a De64257nition 2 Computation and Properties 3 Chains brPage 3br Generalized Eigenvectors Math 240 De64257nition Computation and Properties Chains Motivation Defective matrices cannot be diagonalized because they do not possess enough eigenvectors to Diagonalization brPage 2br Eigenvalues and eigenvectors of an operator De64257nition Let be a vector space and be a linear operator A number is called an eigenvalue of the operator if for a nonzero vector The vector is called an eigenvector of as D. EFORMATION. . OF. 3. D. M. ODELS. Tamal. K. . Dey. , . Pawas. . Ranjan. , . Yusu. Wang. [The Ohio State University]. (CGI 2012). Problem. Perform deformations without asking the user for extra structures (like cages, skeletons . Autar. Kaw. Humberto . Isaza. http://nm.MathForCollege.com. Transforming Numerical Methods Education for STEM Undergraduates. Eigenvalues and Eigenvectors. http://nm.MathForCollege.com. Objectives. 7.1. Eigenvalues and Eigenvectors. Def.. Let . A. be an . n. x. n. matrix and let . X. be an . n. x. 1 matrix. . X. is said to be an eigenvector for . A. if there is some scalar λ so that . AX = . D. EFORMATION. . OF. 3. D. M. ODELS. Tamal. K. . Dey. , . Pawas. . Ranjan. , . Yusu. Wang. [The Ohio State University]. (CGI 2012). Problem. Perform deformations without asking the user for extra structures (like cages, skeletons . Hung-yi Lee. Chapter 5. In chapter 4, we already know how to consider a function from different aspects (coordinate system). Learn how to find a “good” coordinate system for a function. Scope. : Chapter 5.1 – 5.4. and . eigenvectors. Births. Deaths. Population. . increase. Population. . increase. = . Births. – . deaths. t. Equilibrium. N: . population. . size. b: . birthrate. d: . deathrate. The. net . EIGEN … THINGS. (values, vectors, spaces … ). CONVENTION: . From now on, unless otherwise spec-. ified. , all matrices shall be square, i.e. . . . Another, less simple example:. . What are these . Prepared by Vince Zaccone. For Campus Learning Assistance Services at UCSB. Prepared by Vince Zaccone. For Campus Learning Assistance Services at UCSB. Consider the equation . , where A is an . nxn. Prepared by Vince Zaccone. For Campus Learning Assistance Services at UCSB. Prepared by Vince Zaccone. For Campus Learning Assistance Services at UCSB. Consider the equation . , where A is an . nxn. Case I: real eigenvalues of multiplicity 1. MAT 275. Let . and . be two functions. A system of differential equations can have the form. where . and . are constants. This is an example of a linear system of ODEs with constant coefficients.. Review. If . . (. is a vector, . is a scalar). . is an eigenvector of A . . is an eigenvalue of A that corresponds to . . Eigenvectors corresponding to . are . nonzero. solution . of . (. A. .