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D.4.4.5 isCI
Procedure from library cisimplicial.lib (see cisimplicial_lib).
- Usage:
- isCI(A); A is an integral matrix
- Return:
- 1 if the simplicial toric ideal I(A) is a complete intersection
and 0 otherwise. If printlevel > 0 and I(A) is a complete
intersection it also shows a minimal set of generators of I(A)
- Assume:
- A is an m x n integral matrix with nonnegative entries and for
every 1 <= i <= m, there exist a column in A whose i-th coordinate
is not null and the rest are 0.
Example:
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