On Thu, 23 Oct 2014, Nathann Cohen wrote:
sage: gcd([5]) 5 sage: gcd([5,7]) 1
This is good argument to support (only) []-style argument for several elements. Be consistent within same program. Or in Sage terms, "Build a car, don't let it look like bicycle combined to tractor." :=)
Btw, why gcd([]) returns zero? At least there is inconsistency with lcm([]) returning one. I guess they should both return one or raise an exception.
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