Timeline for A symbol to denote the set of prime numbers ?
Current License: CC BY-SA 3.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 4, 2020 at 5:52 | comment | added | PatrickT | @MartinBrandenburg, you made my day, thanks! (Quote: P stands for the p in "irrational") | |
| Dec 22, 2019 at 14:55 | comment | added | Martin Brandenburg | @DouglasSirk I guess the P stands for the p in "irrational"? :D | |
| Jan 25, 2019 at 2:14 | comment | added | Douglas Sirk | $\mathbb P$ is used for the set of irrationals by many topologists | |
| Dec 21, 2018 at 19:16 | comment | added | Somatic Custard | $\mathbb{P}$ fits right in with $\mathbb{N},\mathbb{Z},\mathbb{Q},\ldots$ | |
| Jul 12, 2011 at 10:12 | comment | added | Qfwfq | @Marius: I prefer $\mathbb{H}$ for quaternions and $\mathfrak{H}^n$ for hyperbolic $n$-space! | |
| Jul 12, 2011 at 6:46 | comment | added | Marius Overholt | @Michael: Isn't P more common for probabilities than $\mathbb{P}$? I have only a couple of books about probability; both use P. | |
| Jul 12, 2011 at 6:43 | comment | added | Marius Overholt | @Seva: In complex analysis $\mathbb{D}$ denotes the open unit disk and $\mathbb{H}$ the open upper half plane. The latter notation is also used in number theory (modular forms). I think that $\mathbb{P}$ is quite reasonable, because it is very unlikely to be confused with $\mathbb{P}^n$ (projective space) from algebraic geometry. | |
| Jul 11, 2011 at 23:30 | comment | added | Michael Lugo | I would like $\mathbb{P}$ although I reserve it for probabilities. OF course there would be no conflict but I like my notation to not have homonyms, even if they can be disambiguated by context. | |
| Jul 11, 2011 at 22:04 | comment | added | Mariano Suárez-Álvarez | @Seva: you only have to elect me Emperor of Notation... | |
| Jul 11, 2011 at 20:52 | comment | added | Martin Brandenburg | @Seva: $\mathbb{A}^n$? | |
| Jul 11, 2011 at 18:31 | comment | added | Seva | I think it is reasonable to reserve the \mathbb script for algebraic structures (rings, fields, and alike). Perhaps, $\mathcal P$ would be the best choice - but I don't really believe MO being influencial enough to set up a notation like this, whatever we decide here. | |
| Jul 11, 2011 at 18:29 | comment | added | Felipe Voloch |
$\prod_{p \in \Pi} f(p)$ is revolting.
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| Jul 11, 2011 at 18:20 | comment | added | Pace Nielsen | I've seen that one too. I've also seen $P$ and $\mathcal{P}$. I think I've even seen $\Pi$, but I don't like that one. | |
| Jul 11, 2011 at 18:10 | history | answered | Martin Brandenburg | CC BY-SA 3.0 |