12 years of Python and only at v2.2
Michael Hudson
mwh at python.net
Thu Dec 5 15:42:29 EST 2002
Dennis Lee Bieber <wlfraed at ix.netcom.com> writes:
> Greg Ewing fed this fish to the penguins on Wednesday 04 December 2002
> 06:03 pm:
>
> > That's still monotonic. ("Monotonic" doesn't mean
> > "regular", it just means "always going in the same
> > direction".)
> >
>
> "Monotonic" is, itself, a hard term to pin down... Out of three
> dictionaries in my possession, only the OED had any definitions that
> were not tied to the literal "single tone". [I would like to state that
> one of the other two dictionaries is a 4" thick unabridged, not the
> more common "college" editions]
Here we're talking maths. I don't see the mathematical definition of
continuity in the OED either...
> The OED secondary definition was of a function which neither increased
> nor decreased, or if it did increase/decrease, it did so in such a
> manner (nothing like a recursive definition) -- which I interpret to
> mean no increase/decrease in steps.
I think the OED definition is a strange way of putting it.
f monotonic <=> (x>=y => f(x) >= f(y))
In the case at hand f was "Python version" as a function of time.
Cheers,
M.
--
I think if we have the choice, I'd rather we didn't explicitly put
flaws in the reST syntax for the sole purpose of not insulting the
almighty. -- /will on the doc-sig
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