ePortfolios |STEM Gender Equality | ZOOM | Slack | Spreading Mathematical Happiness

You can support MathsGee with your DONATION

0 like 0 dislike
30 views
For any set $X$ is there a function $f$, with domain $X\backslash{0}$, so that $f(x)$ is a member of $x$ for every nonempty $x$ in $X$?
| 30 views