i1 : f = random(ZZ^6, ZZ^4) o1 = | 8 7 3 9 | | 3 1 7 0 | | 3 7 1 3 | | 8 3 0 7 | | 5 5 7 7 | | 6 0 9 1 | 6 4 o1 : Matrix ZZ <--- ZZ |
i2 : M = subquotient ( f * diagonalMatrix{2,3,8,21}, f * diagonalMatrix{2*11,3*5*13,0,21*5} ) o2 = subquotient (| 16 21 24 189 |, | 176 1365 0 945 |) | 6 3 56 0 | | 66 195 0 0 | | 6 21 8 63 | | 66 1365 0 315 | | 16 9 0 147 | | 176 585 0 735 | | 10 15 56 147 | | 110 975 0 735 | | 12 0 72 21 | | 132 0 0 105 | 6 o2 : ZZ-module, subquotient of ZZ |
i3 : factor M ZZ ZZ ZZ o3 = ZZ + -- + -- + ---- 5 11 5*13 o3 : Expression of class Sum |