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when I combine untrace and ImaginaryI, the property ImaginaryI will lose efficacy, this is a example

ex:= i tr(i A);

there seems to be some bugs.

substitute(_,$i i->-1$);

is also not valid.

in Bug reports by (2.1k points)
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1 Answer

+1 vote
Best answer

Now fixed in master on github.

by (82.0k points)
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Thanks. It works.