On Monday, February 8, 2016 8:23 AM, Ben Hoyt <benh...@gmail.com> wrote:
>Just a suggestion for a documentation tweak. Currently the docs for len() on a
>set say this:
>
> .. describe:: len(s)>
> Return the cardinality of set *s*.
>
>I'm a relatively seasoned programmer, but I don't really have a maths
>background, and I didn't know what "cardinality" meant. I could kind of grok
>it by context, but could we change this to something like the following?
>
> .. describe:: len(s)
>
> Return the number of elements in set *s* (cardinality of *s*).
+{{}}
(using the normal von Neumann definitions for 0={} and Succ(n) = n U {n})
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