[Maxima-bugs] [ maxima-Bugs-2412132 ] Invalid contraction of ichr2

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Bugs item #2412132, was opened at 2008-12-09 11:56
Message generated for change (Comment added) made by vttoth
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Category: Share Libraries
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Viktor Toth (vttoth)
Assigned to: Viktor Toth (vttoth)
Summary: Invalid contraction of ichr2

Initial Comment:
When ichr2 is contracted using a metric tensor with a new style contravariant index, nonsense is produced:

load(itensor);
imetric(g);
g([-u,-v],[])*ichr2([u,i],[k]),noeval;
contract(%);

This result contains g([i,%1],[],-v), which is invalid; we should not be contracting a derivative index if it produces a contravariant derivative, which we do not properly handle.


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Comment By: Viktor Toth (vttoth)
Date: 2008-12-23 09:00

Message:
The reported bug is not present in the current cvs version of
Maxima. 

Thank you for your report. If you see this bug in a later version
of Maxima, please submit a new bug report.


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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=104933&aid=2412132&group_id=4933