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D.6.12.3 KSlinear
Procedure from library kskernel.lib (see kskernel_lib).
- Usage:
- KSlinear(matrix M);
computes matrix of linear terms of the kernel of the
Kodaira-Spencer map. To be called after the procedure
KSker(p,q)
- Return:
- nothing; but replaces elements of the matrix KSkernel
in the ring Ksring with their leading monomials
w.r.t. the local ordering (ls)
Example:
| | LIB "kskernel.lib";
int p=6;
int q=7;
KSker(p,q);
setring Kskernel::KSring;
KSlinear(KSkernel);
print(KSkernel);
==> 0, 0, 0, 0, 0, 2*T(1),
==> 0, 0, 0, 0, 0, 3*T(2),
==> 0, 0, 0, 0, 0, 4*T(3),
==> 0, 0, 0, 2*T(1),3*T(2), 9*T(4),
==> 0, 0, 0, 3*T(2),4*T(3), 10*T(5),
==> 2*T(1),3*T(2),4*T(3),9*T(4),10*T(5),16*T(6)
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