theorem Th37: :: MATRIX_9:37
( <*2,1,3*> * <*1,3,2*> = <*2,3,1*> & <*1,3,2*> * <*2,1,3*> = <*3,1,2*> & <*2,1,3*> * <*3,2,1*> = <*3,1,2*> & <*3,2,1*> * <*2,1,3*> = <*2,3,1*> & <*3,2,1*> * <*3,2,1*> = <*1,2,3*> & <*2,1,3*> * <*2,1,3*> = <*1,2,3*> & <*1,3,2*> * <*1,3,2*> = <*1,2,3*> & <*1,3,2*> * <*2,3,1*> = <*3,2,1*> & <*2,3,1*> * <*2,3,1*> = <*3,1,2*> & <*2,3,1*> * <*3,1,2*> = <*1,2,3*> & <*3,1,2*> * <*2,3,1*> = <*1,2,3*> & <*3,1,2*> * <*3,1,2*> = <*2,3,1*> & <*1,3,2*> * <*3,2,1*> = <*2,3,1*> & <*3,2,1*> * <*1,3,2*> = <*3,1,2*> )