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D.15.6.5 isAface
Procedure from library gitfan.lib (see gitfan_lib).
- Usage:
- isAface(a,gam0); a: ideal, gam0:intvec
- Purpose:
- Checks whether the face of the positive orthant,
that is spanned by all i-th unit vectors,
where i ranges amongst the entries of gam0,
is an a-face.
- Return:
- int
Example:
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