This is not fun: sage: from sage.rings.complex_number import ComplexNumber as CN sage: parent(1+I) Symbolic Ring sage: coerce(CN, 1+I) BOOM
(with 4.8.alpha1 and 4.7.2 in 64-bit Linux) It looks like mpfr is extremely unhappy about something. Also, if I just use the regular ComplexNumber in the global namespace with the same command, I get "TypeError: unable to coerce to a ComplexNumber: <type 'str'>". I understand that coercion may not be able to handle SymbolicRing stuff to complex, but that's a strange message, especially since ComplexNumber claims that it wants strings to convert. But for now let's just deal with the segfault. Dan -- --- Dan Drake ----- http://mathsci.kaist.ac.kr/~drake -------
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