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- Path: sparky!uunet!olivea!spool.mu.edu!agate!ucbvax!ucdavis!landau.ucdavis.edu!gruffini
- From: gruffini@landau.ucdavis.edu (Giulio Ruffini)
- Newsgroups: sci.math.symbolic
- Subject: Re: mma big bad bug
- Message-ID: <20742@ucdavis.ucdavis.edu>
- Date: 6 Jan 93 00:59:00 GMT
- References: <15326.2b48512a@ohstpy.mps.ohio-state.edu>
- Sender: usenet@ucdavis.ucdavis.edu
- Organization: Physics, UC Davis
- Lines: 20
-
- In article <15326.2b48512a@ohstpy.mps.ohio-state.edu> vandesande@ohstpy.mps.ohio-state.edu writes:
- >Here is a bizzarre mma bug. Try entering:
- >
- >Pi*Sqrt[Pi]/(2*3*Sqrt[2])
- >
- >Brett
-
- I get (with Mma 2.0) the same "infinite" loop when Pi is replaced with other
- mathematical constants such as E, EulerGamma, Catalan.
- (I found this whilst trying to rule out my first thought which was that
- Power is getting confused in looking for a way to apply E^(Pi I) = -1 )
-
- Replacing Pi with, for example, 11 Pi seems to remove the problem, but
- unprotecting and changing the attributes of Pi did not seem to help.
-
- It is peculiar that the fact that Catalan has a special numerical value
- affects Mma even in cases where it is clear(?) that the
- numerical value is not used.
-
- Andrew (from a friends account) parkes@ucdhep.ucdavis.edu
-