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WikiProject Mathematics (Rated B-class, Mid-importance)
WikiProject Mathematics
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Mathematics rating:
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 Field:  Basics
One of the 500 most frequently viewed mathematics articles.

Other characters used[edit]

NEC in the NEAC 1103 computer documentation from 1958, uses the term "sexadecimal" and the sequence 0123456789DGHJKV. See the brochure at --(unsigned) 2007-07-18T04:08:21‎

The article does not mention symbols 0, 1 and V. While 0 and 1 can be deducted, where can the V be derived from?
--Matthiaspaul (talk) 00:43, 30 May 2017 (UTC)

Origin of hexadecimal notation using ABCDEF[edit]

The article at present does not discuss the origin of the A-F symbols (for 10-15) at all, although prior versions attributed it to IBM somewhen in the 1950s. I think this is vital info for the article, so we should research and add this, ideally by nailing it down to a specific project and time, perhaps even to the inventor.

Having had only a cursory look so far, I have seen it being mentioned in IBM documents dated 1960, and I've seen third-party documents (dated decades later) attributing it to IBM. Has someone seen it in IBM documents of the 1950s (or earlier)? --Matthiaspaul (talk) 10:18, 1 June 2017 (UTC)

[I found this comment in an old thread in the talk page archive:]
IBM certainly was not the first to use A-F. Such was in use from the late 1940's through the late 1950's at MIT's Wirlwind Project - a 16 bit binary computer - I joined the project in 1952.
—Preceding unsigned comment added by Kp2a (talkcontribs) 16:31, 31 July 2008 (UTC)
However, I've gone through a few Whirlwind I documents at Bitsavers and could not find this notation being mentioned there so far. --Matthiaspaul (talk) 10:18, 1 June 2017 (UTC)

Proposed numerical symbols.[edit]

I have removed the addition (twice) because:

  1. There is no hint of any evidence that this proposal was widely accepted (to date) (WP:UNDUE).
  2. It refers to the original research of the author in question.
  3. It is a very recent proposal by the author which to date does not seem to have attracted any outside attention (WP:MADEUP).

Kleuske (talk) 11:00, 2 July 2017 (UTC)

I'm just curios about actual rules of regular editors. When I tried to describe proposal few years ago, it was rejected on "23:34, 3 May 2015‎" with comment "..Reverted good faith edits by Valdisvi: Someone's personal blog is not a reliable source. While this might, in the future, be of historical interest, at least Martin has a ref.."

When we get it publicised in peer reviewed journal it is still not enough, even though I don't see big difference from proposal of Bruce Alan Martin (except it was long time ago and that our proposal is much more practical). Is wikipedia source of all knowledge, or just source of history and old ideas? — Preceding unsigned comment added by Valdis.vitolins (talkcontribs) 15:02, 2 July 2017 (UTC)

Actually, it does seem (to me) on a par with the proposal of Bruce Alan Martin. I think we should list both or neither. — Arthur Rubin (talk) 15:13, 2 July 2017 (UTC)
I agree. Without any sourced notable use of Martin's proposal, it should go. Same applies to the Valdis' proposal. --A D Monroe III (talk) 16:52, 2 July 2017 (UTC)
The Martin proposal is from 1968 and is very reasonable in the history section as it is likely that using A–F was considered ridiculous by others at the time. There only needs to be one example of a proposal, namely the 1968 effort—it shows the general idea of using new symbols. A new proposal should not be added unless secondary reliable sources (independent of the authors) publish opinions on the proposal. Mentioning a new proposal that may be useful or which may never generate interest is not the purpose of an encyclopedic article. Johnuniq (talk) 05:51, 3 July 2017 (UTC)
This journal (IJCSET) is not reviewed, and not even indexed, by MathSciNet. This is a strong indication that it is not a reliable publication. Moreover, both authors of the article proposed (Cumings and Vitolins) are credited with zero publication by MathSciNet. It is not the role of wikipedia to offer notoriety to mathematicians and their ideas before they are recognized by the mathematical community. But I also agree with Arthur Rubin: The Martin proposal is not much better from this standpoint, as Comm. ACM (in which his proposal was published in 1968 in a letter to the Editor) is no longer indexed by MathSciNet since 1992, and as Bruce Martin is also credited with zero publication by MathSciNet. I thus think the mention of his proposal should also be suppressed. The argument proposed for keeping it, « it is likely that using A-F was considered ridiculous by others at the time » is pure speculation and supported by no source. Sapphorain (talk) 19:06, 4 July 2017 (UTC)
Sure, I'm speculating—but I'm only speculating about whether the mention is WP:DUE, and due boils down to a matter of opinion. There is no speculation that there was at least a minor objection raised against ABCDEF in the early days. Johnuniq (talk) 22:27, 4 July 2017 (UTC)
Martin's intervention would definitely need a secondary source mentioning it in order to be kept; I suppressed the reference to Vitolins's blog, which is not an appropriate reference. Sapphorain (talk) 10:49, 5 July 2017 (UTC)
If we can't find sources for a competing proposals being actually used (or at least more widely debated), I'd be good with leaving a general statement along the lines of "other proposals were made, but didn't catch on", and even giving Martin's proposal as a source for this without including it in the main text. But if we instead just take out the whole thing, I wouldn't complain. --A D Monroe III (talk) 17:22, 13 July 2017 (UTC)

Merger proposal[edit]

I propose to merge Tonal system into Hexadecimal. The Tonal system is not so notable, and the Hexadecimal article is of a reasonable size that the merging of Tonal system will not cause any problems as far as article size is concerned. Pinging @Double sharp, Balon Greyjoy, and Djkauffman: for assistance. —Yours sincerely, Soumyabrata (talksubpages) 08:49, 15 September 2019 (UTC)

Against. I think Tonal System is notable. It's a base 16 system, but it's not a logical sub-subject to Hexadecimal. There's definitely enough substance in Tonal System article to justify a separate article. (talk) 14:40, 15 January 2020 (UTC)