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Martin Schoenert wrote in reply to my query:

Can you give us a concrete example where this does *not* happen.

When I try it, I always get the empty list.gap> [ [ 1, 2 ], [ 3, 4 ] ] * []; [ ] gap> 2 * []; [ ]

I seem to have made a mistake. It turns out that *both* of my lists were

empty where the problem occurred, so [] * [] returns an error, which I have

no serious objection to.

Sorry for the confusion,

Cheers,

Michael.

---------------------------------/|-|--|-|--|-Michael-Smith------------------ Michael.Smith@maths.anu.edu.au /-| |\ | | | Mathematics (CMA) -------------------------------/--|-|-\|-|_/|-Australian-National-University-

http://wwwmaths.anu.edu.au/~smith/Michael_Smith.html

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