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- Path: sparky!uunet!psinntp!kepler1!andrew
- From: andrew@rentec.com (Andrew Mullhaupt)
- Newsgroups: sci.math
- Subject: Re: Unsolved Integrals
- Message-ID: <1409@kepler1.rentec.com>
- Date: 14 Dec 92 17:17:21 GMT
- References: <1992Dec10.204653.29154@pellns.alleg.edu>
- Organization: Renaissance Technologies Corp., Setauket, NY.
- Lines: 24
-
- In article <1992Dec10.204653.29154@pellns.alleg.edu> frisinv@alleg.edu writes:
- >My hobby is working on solving unsolved integrals (no successes). Lately
- >I've been wondering if I am wasting my time (aside from practice at the
- >method of integration by tricks:)) Is there any way of testing if a
- >particular integral has a closed form solution? Has anyone heard of an
- >unsolved integral being solved recently?
-
-
- There are some integrals which are impossible to express in closed form,
- and this is usually determined by 'Liouville theory'. There is a lot
- known about this. When you say _unsolved_ I assume you do not mean
- _known to be impossible_. If you work on an _impossible_ integral, then
- you do waste your time.
-
- You should consult Zwillinger's _Handbook of Integration_ and then
- Hardy and M. Riesz's Cambridge Tract about integration. Should more
- be required, there is the work of J. F. Ritt and more modern stuff
- like the Risch algorithm for finding elementary closed forms for
- integrals.
-
- Later,
- Andrew Mullhaupt
-
-
-