Timeline for Nowhere dense covering number of a connected $T_2$ space
Current License: CC BY-SA 3.0
8 events
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| Oct 23, 2017 at 13:08 | history | edited | Dominic van der Zypen | CC BY-SA 3.0 |
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| Jul 25, 2017 at 20:31 | comment | added | Mathieu Baillif | Haha, of course. When I wrote my remark I somehow forgot that the union of two nowhere dense sets is nowhere dense. | |
| Jul 25, 2017 at 11:52 | comment | added | Ramiro de la Vega | @MathieuBaillif Note that $v(X)=cov(X)$ except for meager spaces where $v(X)=\aleph_0$ and $Cov(X)=1$. | |
| Jul 25, 2017 at 11:49 | comment | added | Wlod AA | (@RamirodelaVega, I was joking. Sorry. PS. Ok, Taras has answered the question fully in his comment to this question and to the follow up question). | |
| Jul 25, 2017 at 11:46 | comment | added | Ramiro de la Vega | I don't think your older question is asking what you claim it is. Any space has $v(X)>2$. | |
| Jul 25, 2017 at 11:29 | comment | added | Wlod AA | What about $\ \kappa=2\ $ ? | |
| Jul 17, 2017 at 15:15 | comment | added | Mathieu Baillif | This is just a remark: if instead of nowhere dense sets we consider coverings by meager sets, we obtain the classical covering number of $X$, usually written as Cov$(X)$. But you are probably aware of that. | |
| Jul 15, 2017 at 14:04 | history | asked | Dominic van der Zypen | CC BY-SA 3.0 |