> > Oh dear. abs_integrate is something I now dread to think about; it is > so > > very useful, and yet so very buggy with the Sage flags - see > > http://trac.sagemath.org/ticket/12731 :-( > > Hmm, what are the flags that cause trouble? My guess is that the > abs_integrate code was written with some assumptions about how the world > works, in particular that default flags are in force. If you can tell > which are the problematic flags, it might be relatively straightforward > to identify what parts of abs_integrate are not consistent with that. > It might be possible to fix up abs_integrate, or it might help, as a > work around, to assign default flags temporarily while abs_integrate is > being called. Just guessing here. > > Sometimes we do unset domain:complex temporarily but sometimes there are flags set/unset silently - I don't have details now, though we've certainly tried to post Maxima bug reports whenever possible regarding this.
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