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On Mon, Dec 13, 2010 at 9:47 AM, Dirk Laurie <dpl@sun.ac.za> wrote:
> 2. Let b be any neighbour of a.    -- easy, b=#F[a]. b==0 means a is isolated.


is #t guaranteed not to be 0 if there's any member of the array part?
i don't think so...



-- 
Javier