i1 : f = random(ZZ^6, ZZ^4) o1 = | 9 3 8 5 | | 5 9 8 4 | | 7 9 9 0 | | 0 4 2 4 | | 2 1 8 6 | | 2 1 8 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 (| 18 9 64 105 |, | 198 585 0 525 |) | 10 27 64 84 | | 110 1755 0 420 | | 14 27 72 0 | | 154 1755 0 0 | | 0 12 16 84 | | 0 780 0 420 | | 4 3 64 126 | | 44 195 0 630 | | 4 3 64 21 | | 44 195 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 |