On Wed, 16 Nov 2011 at 03:02AM -0800, Simon King wrote: > [1,1] in Python (thus, also in Sage) is a list. Lists can't be added > or subtracted.
Lists can be added, but addition of lists is concatenation -- not at all what the OP wants. Dan -- --- Dan Drake ----- http://mathsci.kaist.ac.kr/~drake -------
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