- exposé
- cours - matière potentielle : on mechanics
21 Symmetric and skew-symmetric matrices 21.1 Decomposition of a square matrix into symmetric and skew- symmetric matrices Let Cn×n be a square matrix. We can write C = (1/2)(C + Ct) + (1/2)(C − Ct) = A+B, where At = A is symmetric and Bt = −B is skew-symmetric. Examples: • Let C = 1 2 3 4 5 6 7 8 9 .
- infinitessimal rotation
- facts about complex numbers
- direction of ψ as the axis of rotation
- taylor series expansion of the indicated thing
- corresponding eigenvectors
- eigenvector
- symmetric matrix
- complex conjugate
- expansion
- left hand-side
- left hand side