l.butler at ed.ac.uk
Wed Aug 26 20:46:23 CDT 2009
On Wed, 26 Aug 2009, Richard Fateman wrote:
< I think that limit was written to assume that the limit point was real, and
< that it was approached on the real line from above, below, or both.
< Thus limit(1/x,x,0) has 2 values, inf or -inf depending on the direction.
< infinity is unsigned infinity, so I think this is right.
Perhaps I am being dense, but the documentation says
-- Constant: infinity
`infinity' represents complex infinity.
I suppose that the documentation is not strictly correct, since an
unsigned real infinity is not a complex infinity. Leo
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