Computer simulation of plasma and n-body problems. Annual report, Jun 1974--May 1975

The following FORTRAN language computer codes are presented: efficient two- and three-dimensional central force potential solvers; a three-dimensional simulator of an isolated galaxy which incorporates the potential solver; a two-dimensional particle-in-cell simulator of the Jeans instability in an infinite self-gravitating compressible gas; and a two-dimensional particle-in-cell simulator of a rotating self-gravitating compressible gaseous system of which rectangular coordinate and superior polar coordinate versions were written