Timeline for Is the empty graph a tree?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Feb 9, 2013 at 18:08 | comment | added | Samuel Vidal | "disconnected" and "connected" not forming a dichotomy : brilliant, that's the point ! | |
| Feb 5, 2013 at 19:10 | comment | added | Andrew D. King | I agree, and would point out, in case anyone is uncomfortable with "disconnected" and "connected" not forming a dichotomy, that neither do "closed" and "open". | |
| Feb 4, 2013 at 18:41 | comment | added | Terry Tao | I sometimes like to call the empty space the (unique) example of an unconnected space (neither connected (i.e. one connected component) nor disconnected (i.e. two or more connected components)). | |
| Feb 1, 2013 at 23:51 | comment | added | Tom Goodwillie | I like to say that a space is disconnected if it may be partitioned into two (nonempty) closed sets, and that a space is connected if it is not disconnected and not empty, either. In other words, I call the empty space neither connected nor disconnected. But that's just me. | |
| Feb 1, 2013 at 21:16 | history | edited | Samuel Vidal | CC BY-SA 3.0 |
deleted 11 characters in body
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| Feb 1, 2013 at 21:13 | history | edited | Emil Jeřábek | CC BY-SA 3.0 |
fix markup
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| Feb 1, 2013 at 21:07 | history | answered | Samuel Vidal | CC BY-SA 3.0 |