Maxima (http://maxima.sourceforge.net/) is a system for the manipulation of symbolic and numerical expressions, including differentiation, integration, Taylor series, Laplace transforms, ordinary differential equations, systems of linear equations, and vectors, matrices, and tensors.
Maxima is dedicated to the memory of William F. Schelter. On 6 October 1998 William F. Schelter was formally notified that he could distribute DOE-MACSYMA upon terms of his choosing, in particular the GNU General Public License. Schelter proceed to distribute derived works under the GPL. In the formal notification a request was made that a paragraph "should be included in the GPL and should accompany other modifications, enhancements or derivative works of your program." This paragraph is transcribed below in honor of that request. Like the preamble it does not form part of the license.
"Distribution of such derivative works is subject to the U.S. Export Administration Regulations (Title 15 CFR 768-799), which implements the Export Administration Act of 1979, as amended, and/or the International Traffic in Arms Regulations, of 12-6-84, (Title 22 CFR 121-130), which implements the Arms Export Control Act (22 U.S.C. 2728) and may require license for export."
See also Maxima_as_an_OSCAS.
