Multivalued Inverse Functions: mathematical treatment and
implementation in computer algebra systems.
Department of Applied Mathematics, University of
Ontario, London, Canada
Monday, February 10, 2003 13:00-14:00,
The implementation of elementary functions, such as
and the inverse trigonometric functions, in computer algebra
shown that we need to think about multivalued functions carefully.
this talk, I explain the requirements of a computer algebra system
review the possible definitions of a multivalued function. I
multiple values (sets of values), Riemann surfaces and principal
values. For CAS, principal values is best, but that requires
the simplification rules.
How we are doing this is described.
Room 145, NIST North (820)
Monday, February 10, 2003 11:00-12:00,
Contact: D. W. Lozier
Note: Visitors from outside NIST must contact
Robin Bickel; (301) 975-3668;
at least 24 hours in advance.