simple roots of the Characteristic polynomial (also called symbol) of the initial LPDO and reduced LPDOs appearing at each factorization step. Below the...
15 KB (3,864 words) - 23:56, 27 October 2024
(Eastwood and Rice, 1987). Differential operators Laplace invariant Invariant factorization of LPDOs Penrose and Rindler (1987). Spinors and Space Time. Cambridge...
9 KB (1,324 words) - 16:11, 7 March 2025
arbitrary order and arbitrary type; see Invariant factorization of LPDOs. Partial derivative Invariant (mathematics) Invariant theory G. Darboux, "Leçons sur la...
3 KB (555 words) - 04:19, 13 February 2020