i1 : f = random(ZZ^6, ZZ^4) o1 = | 3 3 0 2 | | 7 7 3 9 | | 2 0 0 9 | | 1 9 0 5 | | 2 7 9 8 | | 6 1 4 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 9 0 42 |, | 66 585 0 210 |) | 14 21 24 189 | | 154 1365 0 945 | | 4 0 0 189 | | 44 0 0 945 | | 2 27 0 105 | | 22 1755 0 525 | | 4 21 72 168 | | 44 1365 0 840 | | 12 3 32 147 | | 132 195 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 |