Talk:Table of mathematical symbols by introduction date

	Mathematics portal This article is within the scope of WikiProject Mathematics, a collaborative effort to improve the coverage of mathematics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.MathematicsWikipedia:WikiProject MathematicsTemplate:WikiProject Mathematicsmathematics
Low	This article has been rated as Low-priority on the project's priority scale.

Typography Low‑importance

	This article is within the scope of WikiProject Typography, a collaborative effort to improve the coverage of articles related to Typography on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.TypographyWikipedia:WikiProject TypographyTemplate:WikiProject TypographyTypography
Low	This article has been rated as Low-importance on the importance scale.

Division symbol

The " $b){\overline {~a~}}$ " one. When did that happen? Thanks. Saintrain (talk) 21:07, 18 September 2008 (UTC)[reply]

Contradiction with Another WP Article

The article Blackboard bold (in the Origins section, second paragraph) mentions that Blackboard bold capital Q and Z were not first used/introduced by the Bourbaki Group, but this article says otherwise. Apparently, it is a common misconception/error to cite them as the notation's inventor. So, I have provided some citation tags in both articles until this issue of self-inconsistency within Wikipedia is remedied. We have to be careful in following our sources on both sides. Can we resolve this problem? 128.146.32.243 (talk) 19:56, 7 November 2013 (UTC)[reply]

Fractional bar

The muslims first used the fractional bar. Böri (talk) 10:36, 14 November 2015 (UTC)[reply]

This article also says: Division slash "deriving from horizontal fraction bar, invented by Arabs in the 12th century" Böri (talk) 08:25, 16 November 2015 (UTC)[reply]

Out of order

Is there a reason that "Blackboard bold capital Q (for rational numbers set)" (1895) is below "Blackboard bold capital Z (for integer numbers set)" (1930) or is that merely an error? The-erinaceous-one (talk) 08:32, 30 July 2019 (UTC)[reply]

It is indeed erroneous but it's not serious; the reader can put the table into chronological order by clicking on the column heading. There are other entries which are out of chronological order. I started to correct it but decided against it, in part because of the amount of work involved. I have changed the "ca. 1360" and "ca. 1650" entries, which louse up the sorting. -- Roger Hui (talk) 22:39, 30 July 2019 (UTC)[reply]

Disjunction but not conjunction

The article has an entry for logical disjunction but not logical conjunction. Is this because only a notation for disjunction was introduced at first, but then the "flipped" symbol was adopted for conjunction because conjunction is dual to disjunction? If this is so, then I think an entry should be added for conjunction directly after disjunction, with an unknown date/unknown first author. Joel Brennan (talk) 19:37, 7 January 2021 (UTC)[reply]

mostly unsourced and missing IR for reals

Where does the information come from ?? This encyclopedia is supposed to give sources, at least hints, but it seems the author has just put whatever he thinks for most of the notations, in particular the BB letters IN, ZZ, QQ, CC. Isn't that "original research" (and "forbidden") if no source is given? Insofar more as a comment above does give a source for IN and ZZ which is in contradiction with the info in the article. So, if anyone has a reference for those who lack (and in particular for IR which is completely missing), please give it, even if it doesn't give the exact and/or same date as the table. Thanks in advance! — MFH:Talk 14:35, 17 March 2025 (UTC)[reply]