isComplete X
A normal toric variety is complete if any of the following equivalent conditions hold:
For more information, see Theorem 3.4.1 in CoxLittleSchenck's Toric Varieties.
Affine varieties are not complete.








Projective varieties are complete.










There are also complete nonprojective normal toric varieties.






To avoid repeating a computation, the package caches the result in the CacheTable of the normal toric variety.
The nonprojective examples are taken from Osamu Fujino and Sam Payne's "Smooth complete toric threefolds with no nontrivial nef line bundles", Japan Academy. Proceedings, Series A, Mathematical Sciences, 81 (2005) 174179, arXiv:math/0510679.