Timeline for Suggestions for good notation
Current License: CC BY-SA 2.5
11 events
| when toggle format | what | by | license | comment | |
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| Oct 29, 2023 at 12:38 | comment | added | Allen Knutson | While people commonly complain about running out of letters (despite having Roman, Greek, Cyrillic, and Hebrew to get started with), one much more quickly runs out of delimiters (), [], {}, <>. It is fantastic that a new pair has been invented. | |
| Dec 18, 2021 at 1:45 | comment | added | Michael Hardy |
@MrPie : The commands \| and \parallel do not yield identical results. Consider $a\|b$ versus $a\parallel b.$ The latter has the horizontal spacing appropriate to a binary relation symbol. To fail to object to the former is akin to being insensitive to gross spelling errors.
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| Dec 15, 2021 at 17:49 | comment | added | Michael Hardy | I have had occasion to use the notation $$ \begin{align} & \lfloor k \rfloor_\text{even} \\ {} \\ = {} & \text{the “even floor” of } k \\ {} \\ = {} & \text{the greatest even integer not exceeding } k \\ {} \\ = {} & 2\lfloor k/2\rfloor. \\ {} \\ {} \end{align} $$ | |
| Oct 6, 2018 at 9:18 | comment | added | Mr Pie |
To add, I also like the notation $\lfloor x\rceil$ for rounding $x$ to the nearest integer $($but mainly because I use $\left\lbrack x\right\rbrack$ to denote $\{1,2,\ldots,x\})$, but I have seen $\| x\|$, however $\|$ can mean other things $($I mean, I have used the command \| to generate it, but another command is \parallel$)$ :P
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| Jan 24, 2013 at 12:15 | comment | added | Felix Goldberg | They are life-savers... | |
| Dec 19, 2011 at 11:10 | comment | added | Konrad Voelkel | @Suvrit: I have learned (in a German school) that Gauss used ordinary brackets [x] to denote the floor function, thus called Gauss bracket. However, I know of no source but guess that it is easily found in Gauss' works. | |
| Dec 15, 2010 at 13:56 | comment | added | Suvrit | But I have also seen some people call these "Gaussian Brackets" --- any reason why that is so? | |
| Oct 21, 2010 at 13:12 | history | made wiki | Post Made Community Wiki by Ben Webster♦ | ||
| Oct 20, 2010 at 20:35 | history | edited | Pietro Majer | CC BY-SA 2.5 |
added 60 characters in body
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| Oct 20, 2010 at 20:25 | comment | added | Richard Borcherds | According to Knuth, this notation and these names were introduced by Iverson in his book "A programming language" in 1962. | |
| Oct 20, 2010 at 20:19 | history | answered | Pietro Majer | CC BY-SA 2.5 |