[seqfan] Re: OEIS license: CC by-sa option?

Olivier Gerard olivier.gerard at gmail.com
Mon Dec 6 06:37:25 CET 2010

On Mon, Dec 6, 2010 at 03:19, Russ Cox <rsc at swtch.com> wrote:

> The text you quoted is true only for the licensor.  Right now that
> is indeed the OEIS Foundation.  But in my text above I said
> "if we ever invoked the SA clause to bring any external changes
> back into the OEIS".  So for example if someone else set up
> their own site with a cleaned up OEIS, the SA clause would give
> us the right to incorporate their modifications.  *BUT* it would
> only give us the CC license rights to them, meaning that we
> would then be bound by it w.r.t. the imported changes or else
> have to exclude them from any future commercial use.
> Russ
This is in fact the central (and tricky) aspect of the viral character of
the CC licences.

By the way I am in contact with IP law specialists and especially Creative
Commons expert Miss Dulong de Rosnay should the OEIS foundation
need an informed advice on these subjects.


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