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COSA'; CODEj 'B St.,SjEC--EtkVS Continue on reverse it necessary and ioentif) by ci.XKi ILi'oer-C j GRa P ( SijEI-GP- I / C(Continue on reverse of necessary and identify by biock number)K uingthis period the investigator worked on the development of parallel algorithms to be used in the following linear algebra areas--- stability and inertia problems, controllability and observability problems, pole assignment problems, and matrix equa-,-onz problems (Sylvester, Lyapunov, Riccati, etc). In particular, lgorithms have been developed which require 0 (n log n) steps for solution on 0 (n) processors. Several presentations on these results were given, including a talk at the SIAM Fall Meeting.-Three papers have been accepted for publication and several more are in preparation. ~ BBIC FILE COPY %b~x 2 Di S * 2 C % A iA LAB S 9 A 5SPA C.*ASRAC 5 I.AS~C~