[GAP Forum] Intersection bug?

[Reiner Staszewski]

Hi Matthew,

I have quite an old version running under windows XP (32 bit), namely
GAP4P4R4 which behaves as you describe, and another version under 64-bit
Linux, namly GAP4P4R10, which behaves correctly.

Best wishes, Reiner Staszewski


m.fayers at qmul.ac.uk wrote:
> Can anyone explain why GAP behaves as follows?
> 
> gap> Intersection([1..3],[1..3]);
> [ 1 .. 3 ]
> gap> Intersection([-3..-1],[-3..-1]);
> [ -3 .. -1 ]
> gap> Intersection([-1..1],[-1..1]);
> [  ]
> 
> 
> ____________________________________________________
> Matthew Fayers
> 
> Queen Mary, University of London
> Mile End Road
> London E1 4NS
> U.K.
> 
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