Mathisson's multipolar scheme Tab mab,mabc, 4。 Fig.1 General idea behind multipolar approximation schemes:The world-tube E of a body is replaced by a representative world-line L.whereas the original energy-momentum tensor Tb is substituted by a set of multipole moments malong this world-line.Such a multipolar description simplifies the equations of motion.This is achieved by consideration of only a finite set of moments. 口◆4回4三+1=，￥8C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mathisson’s multipolar scheme