.RB ( ' )
around the name, as demonstrated for the "unassign" command above.
.PP
+Symbols are considered to be in the complex domain by default, i.e. they are
+treated as if they stand in for complex numbers. This behavior can be changed
+by using the keywords
+.BI real_symbols
+and
+.BI complex_symbols
+and affects all newly created symbols.
+.PP
The following symbols are pre-defined constants that cannot be assigned
a value by the user:
.RS
.BI find( expression ", " pattern )
\- returns a list of all occurrences of a pattern in an expression
.br
+.BI fsolve( expression ", " symbol ", " number ", " number )
+\- numerically find root of a real-valued function within an interval
+.br
.BI gcd( expression ", " expression )
\- greatest common divisor
.br
.BI has( expression ", " pattern )
\- returns "1" if the first expression contains the pattern as a subexpression, "0" otherwise
.br
+.BI integer_content( expression )
+\- integer content of a polynomial
+.br
.BI inverse( matrix )
\- inverse of a matrix
.br
.BI quo( expression ", " expression ", " symbol )
\- quotient of polynomials
.br
+.BI rank( matrix )
+\- rank of a matrix
+.br
.BI rem( expression ", " expression ", " symbol )
\- remainder of polynomials
.br
+.BI resultant( expression ", " expression ", " symbol )
+\- resultant of two polynomials with respect to symbol s
+.br
.BI series( expression ", " relation-or-symbol ", " order )
\- series expansion
.br
Alexander Frink <Alexander.Frink@uni-mainz.de>
.br
Richard Kreckel <Richard.Kreckel@uni-mainz.de>
+.br
+Jens Vollinga <vollinga@thep.physik.uni-mainz.de>
.SH SEE ALSO
GiNaC Tutorial \- An open framework for symbolic computation within the
C++ programming language
.PP
CLN \- A Class Library for Numbers, Bruno Haible
.SH COPYRIGHT
-Copyright \(co 1999-2004 Johannes Gutenberg Universit\(:at Mainz, Germany
+Copyright \(co 1999-2007 Johannes Gutenberg Universit\(:at Mainz, Germany
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by