i1 : f = random(ZZ^6, ZZ^4) o1 = | 3 0 9 9 | | 9 6 9 0 | | 7 3 4 6 | | 7 0 5 3 | | 6 1 3 0 | | 6 5 3 7 | 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 (| 6 0 72 189 |, | 66 0 0 945 |) | 18 18 72 0 | | 198 1170 0 0 | | 14 9 32 126 | | 154 585 0 630 | | 14 0 40 63 | | 154 0 0 315 | | 12 3 24 0 | | 132 195 0 0 | | 12 15 24 147 | | 132 975 0 735 | 6 o2 : ZZ-module, subquotient of ZZ |
i3 : factor M ZZ ZZ ZZ o3 = ZZ + -- + -- + ---- 5 11 5*13 o3 : Expression of class Sum |