A REDUCTION OF AN INDEFINITE SYMMETRIC MATRIX A TO THE FORM $LJL sup T$ BYROTATION AND DECOMPOSITIONS

Brebner, M.A.Grad, M.J.2008-02-262008-02-261977-01-01http://hdl.handle.net/1880/45429The paper discusses the reduction of a non-singular symmetric matrix $A$ by decomposition and similarity rotations to the form $LJL sup T$ where $L$ is a lower triangular matrix and $J$ is a diagonal matrix with diagonal elements plus or minus unity. In effect $PAP sup T~=~LJL sup T$, where $P$ is the product of plane rotations.EngComputer ScienceA REDUCTION OF AN INDEFINITE SYMMETRIC MATRIX A TO THE FORM $LJL sup T$ BYROTATION AND DECOMPOSITIONSunknown1977-13-210.11575/PRISM/30468