#1540 Invalid contraction of ichr2

closed
5
2008-12-23
2008-12-09
Viktor Toth
No

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.

Discussion

  • Viktor Toth

    Viktor Toth - 2008-12-23

    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.

     
  • Viktor Toth

    Viktor Toth - 2008-12-23
    • status: open --> closed
     

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No, thanks