Timeline for Connectedness of a union regading a proximity
Current License: CC BY-SA 2.5
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 15, 2010 at 13:26 | comment | added | KP Hart | There's no need to credit anyone I think as it follows almost straight from the definitions. Maybe check this book (ams.org/mathscinet-getitem?mr=278261) to see if it isn't simply well known. (By the way, it suffices that $A\delta B$: either one of $A$ and $B$ meets both $X$ and $Y$ and we're done or $\lbrace A,B\rbrace=\lbrace X,Y\rbrace$, in which case we have $X\delta Y$ too.) | |
| Jun 14, 2010 at 22:18 | vote | accept | porton | ||
| Jun 14, 2010 at 22:13 | comment | added | porton | Thanks for your solution. In fact I solved myself, but my solution was less beautiful. KP Hart, do you want that I would refer to you in the article (about connectedness) which I am writing? | |
| Jun 14, 2010 at 21:49 | history | answered | KP Hart | CC BY-SA 2.5 |