On 2/25/07, Pere Urbón Bayes <[EMAIL PROTECTED]> wrote: > > > If you read that program and then write something else, it is by > > definition > > a derivative work. What is the license of Leon's program? if it isn't > > open source, > > then reading it and writing something based on it is a potential copyright > > violation. Please be careful. > > I know what you mean William, but what I'm trying to do is to read the > original paper and try to develop something on this open paper. After it, > anyone could say that I'm doing a derivate work, because I never have any > think related with the original code. The only time that I could what to > check the original code, could be if I have doubts on something .. but if > this software in on GAP. I'm not an expert,but if GAP is GPL it can't > contain propietary software, is this ok?. On the other hand, could we > speak with the author and comment it, what do you think?
This one part of GAP (Leon's C code in the GUAVA package) is not GPL'd. The license for Leon's code is (as best as I can determine it, since Leon is hard to communicate with) stated as follows: "Copyright (C) 1992 by Jeffrey S. Leon. This software may be used freely for educational and research purposes. Any other use requires permission from the author.'' I should say it has been hard for *me* to communicate with Leon. Maybe you or someone else can get in touch with him more easily. If you can, please ask him to GPL his code! > > Regards, > > Pere > > > -- > > William Stein > > Associate Professor of Mathematics > > University of Washington > > > > > --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://sage.scipy.org/sage/ and http://modular.math.washington.edu/sage/ -~----------~----~----~----~------~----~------~--~---
