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I just made a micro change to check that exchanging F4dual and B4dual inverses the sign.
If you are happy with it, you can set a positive review on my behalf.
The following tests were added to
sage/combinat/root_system/type_dual.py
by #6588:But whether
cmp()
outputs 1 or -1 is essentially arbitrary. This must be fixed immediately.Component: combinatorics
Author: Jeroen Demeyer
Reviewer: Nicolas M. Thiéry
Merged: sage-5.0.beta12
Issue created by migration from https://trac.sagemath.org/ticket/12793
The text was updated successfully, but these errors were encountered: