1) Currently we _have to_ call error, because the 'solve' routine can
not deliver promised result.
Yes, I know.
The only alternative we have now it to return some garbage and this
may lead to wrong results.
In some sense it is a but in the library. But maybe a better error
message should be doable now. What about replacing:
error "system does not have a finite number of solutions"
by
s := concat ["System does not have a finite number of solutions.",
newLine(),
"Handling this situation is currently not implemented."]
error s
I've no idea whether the newline shows nicely. Maybe, it's not worth the
trouble now.
Better would be to fix that with a Exception system and a NotImplemented
exception.
2) There are reasonable ways to solve positive dimensional system,
simply no is implemented in FriCAS. In light of this error is
resonable -- it inform user about system defect (unimplemented
routine).
OK, it's a defect, but it doesn't inform about "unimplemented".
Ralf
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