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D.2.9.9 sparseHomogIdeal
Procedure from library random.lib (see random_lib).
- Usage:
- sparseid(k,u[,o,p,b]); k,u,o,p,b integers
- Return:
- ideal having k homogeneous generators, each of random degree in the
interval [u,o], p percent of terms in degree d are 0, the remaining
have random coefficients in the interval [1,b], (default: o=u, p=75,
b=30000)
Example:
| | LIB "random.lib";
ring r = 0,(a,b,c,d),dp;
sparseHomogIdeal(2,3);"";
==> _[1]=24004a3+12773a2b+6204a2c+20030b2c+19505bcd
==> _[2]=817b3+9650c3+28857c2d+7247bd2+22567cd2
==>
sparseHomogIdeal(3,0,4,90,9);
==> _[1]=5d
==> _[2]=abc2+4ab2d+c3d+c2d2
==> _[3]=3a
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