i1 : f = random(ZZ^6, ZZ^4) o1 = | 6 6 5 2 | | 9 9 6 4 | | 4 6 7 7 | | 6 8 8 9 | | 0 3 3 3 | | 0 3 6 2 | 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 (| 12 18 40 42 |, | 132 1170 0 210 |) | 18 27 48 84 | | 198 1755 0 420 | | 8 18 56 147 | | 88 1170 0 735 | | 12 24 64 189 | | 132 1560 0 945 | | 0 9 24 63 | | 0 585 0 315 | | 0 9 48 42 | | 0 585 0 210 | 6 o2 : ZZ-module, subquotient of ZZ |
i3 : factor M ZZ ZZ ZZ o3 = ZZ + -- + -- + ---- 5 11 5*13 o3 : Expression of class Sum |