theorem Th37: :: MATRIXR2:37

for D being non empty set
for A being Matrix of 3,D holds A = <*<*(A * (1,1)),(A * (1,2)),(A * (1,3))*>,<*(A * (2,1)),(A * (2,2)),(A * (2,3))*>,<*(A * (3,1)),(A * (3,2)),(A * (3,3))*>*>