#12965: X.Kaehler_cone().lattice() is not a lattice
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Reporter: novoselt | Owner: AlexGhitza
Type: defect | Status: new
Priority: major | Milestone: sage-5.1
Component: algebraic geometry | Keywords: toric
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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In Sage-5.0 we have
{{{
sage: toric_varieties.P2().Kaehler_cone().lattice()
The toric rational divisor class group of a 2-d CPR-Fano toric variety
covered by 3 affine patches
sage: _.base_ring()
Rational Field
}}}
which is wrong since this lattice is not a lattice.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12965>
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