Opened 8 years ago

Last modified 4 years ago

#16045 closed defect

Polytope volume function engines produce different results — at Initial Version

Reported by: wishcow Owned by:
Priority: minor Milestone: sage-8.1
Component: geometry Keywords: polytope, volume, lrs_volume, days88
Cc: jakobkroeker, mkoeppe, vdelecroix, jipilab, mforets, moritz, slabbe Merged in:
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Report Upstream: N/A Work issues:
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The lrs engine for polytope volume calculates volume respective to the dimension of the polytope, while the auto engine calculates volume respective to the dimension of the ambient space.


m3 = matrix(ZZ, [[0,0,0],[0,0,1]])
p = Polyhedron(m3)


(Note: The lrs behavior actually has some benefits, since it allows calculation of volumes of facets without reducing the dimension of the ambient space.)

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