i1 : f = random(ZZ^6, ZZ^4) o1 = | 4 1 0 5 | | 7 8 8 2 | | 9 1 9 8 | | 0 4 7 1 | | 7 8 2 7 | | 3 1 3 5 | 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 (| 8 3 0 105 |, | 88 195 0 525 |) | 14 24 64 42 | | 154 1560 0 210 | | 18 3 72 168 | | 198 195 0 840 | | 0 12 56 21 | | 0 780 0 105 | | 14 24 16 147 | | 154 1560 0 735 | | 6 3 24 105 | | 66 195 0 525 | 6 o2 : ZZ-module, subquotient of ZZ |
i3 : factor M ZZ ZZ ZZ o3 = ZZ + -- + -- + ---- 5 11 5*13 o3 : Expression of class Sum |