Editing Talk:∆

{{WikiProject banner shell|
{{WikiProject Disambiguation}}
}}
== Untitled 2006 topic ==
Shouldn't this redirect to [[Delta (letter)]]? --[[User:83.147.171.12|83.147.171.12]] 11:03, 17 June 2006 (UTC)

:[[Δ]] redirects to [[Delta (letter)]], [[∆]] to [[Triangle]] --[[User:Henrygb|Henrygb]] 16:34, 24 July 2006 (UTC)

No, Symmetric difference, which is its most common maths usage [[User:124.189.227.115|124.189.227.115]] 02:06, 30 October 2006 (UTC)

:This is a triangle, not a Delta.  I have included "Symmetric difference" in [[Delta]] --[[User:Henrygb|Henrygb]] 10:03, 30 October 2006 (UTC)

... Not everyone has access to all the characters on their keyboards, or can visually distinguish between them; I would also worry about visually impaired users or users using a text-reader that might hang up on the characters. For instance, we just got a confused editor on [[Talk:Triangle (disambiguation)]] (and see the first user on this page and the talk page for pretty much all these articles for this exact same query from confused users).  I'm setting this up as a disambiguation; there's no reason to use a redirect if there's a possibility of ambiguity. (Note -- I'm not touching "Δ" redirect right now, because I suspect that people won't know to find and use that character unless they know the difference. That may be wrong and perhaps both Δ and ∆ should have identical disambiguation pages. --[[User:Lquilter|lquilter]] 17:57, 4 February 2007 (UTC)

== Homoglyphs ==

Two characters are involved, different by Unicode definition:
* A. {{unichar|0394|GREEK CAPITAL LETTER DELTA|nlink=Delta (letter)|html=}}; article = <nowiki>[[</nowiki>&thinsp;[[Δ]]&thinsp;]] (R) &rarr; [[Delta (letter)]]
* B. {{unichar|2206|increment|nlink=|html=}}; article = <nowiki>[[</nowiki>&thinsp;[[∆]]&thinsp;]] (DAB) 

I note that B has two different targets (both are DAB pages). I see no ''technical'' errors. My questions are: is this the best way to handle these [[homoglyphs]]? Wouldn't the dab pages need more DABing, like =See also= mentioning (at least), hatnote? Note that this page uses the two glyphs intermixed (eg the Laplace and Increment DAB terms). Ping {{U|LaundryPizza03}}. [[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 10:02, 28 May 2022 (UTC)

:And there is also 
* C. {{unichar|25B3|WHITE UP-POINTING TRIANGLE}}; article = <nowiki>[[</nowiki>&thinsp;[[△]]&thinsp;]] (R) &rarr; [[Geometric Shapes (Unicode block)]]
::-[[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 10:17, 28 May 2022 (UTC)
:::{{ping|DePiep}} Ask [[WT:WPDAB]] forhelp on this one. I would recommend either AfD or including only the articles [[Delta (letter)]], [[Increment operator]], and [[Triangle]]. –[[User:LaundryPizza03|<b style="color:#77b">Laundry</b><b style="color:#fb0">Pizza</b><b style="color:#b00">03</b>]] ([[User talk:LaundryPizza03|<span style="color:#0d0">d</span>]][[Special:Contribs/LaundryPizza03|<span style="color:#0bf">c̄</span>]]) 04:25, 30 May 2022 (UTC)
::::OK, since no cut-and-dried solution (we know). To cover all homoglyphs. OTOH, I do think regular DAB terms ie ''meanings'' like [[Symmetric difference]] should stay. In other situations, such a meaning even be primary topic. And, which page to AfD you mean? -[[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 04:33, 30 May 2022 (UTC)
:::::{{ping|DePiep}} Taking this page to AfD. Or, do you think an RfC might help elicit a solution here? –[[User:LaundryPizza03|<b style="color:#77b">Laundry</b><b style="color:#fb0">Pizza</b><b style="color:#b00">03</b>]] ([[User talk:LaundryPizza03|<span style="color:#0d0">d</span>]][[Special:Contribs/LaundryPizza03|<span style="color:#0bf">c̄</span>]]) 01:45, 31 May 2022 (UTC)
::::::{{re|LaundryPizza03}} imo no AfD needed: this page is helpful. The character is a regular and understandable search term . Our job is to lead the readers who arrive here (not by incident) to a useful article. In general, can be the page itself having content, a DAB page, or a redirect. There are more, e.g., {{clc|Category:Redirects from Unicode characters}}. RfC or a talk:DAB first (not much time this week to initiate). -[[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 04:49, 31 May 2022 (UTC)
::::::In short, LP03, there is no DAB/redirect MOS on ''homoglyphs''. I think a [[WT:DAB]] is the place to develop this. -[[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 05:30, 31 May 2022 (UTC)
::::::Incidentally, someone earlier asked about the entry list on this very page {{slink|Wikipedia_talk:Disambiguation|A_letter_+_its_usage}}. ;-) -[[User:DePiep|DePiep]] ([[User talk:DePiep|talk]]) 05:31, 31 May 2022 (UTC)

== ∆ Is Greek Alphabet ==

∆ [[Special:Contributions/156.57.229.102|156.57.229.102]] ([[User talk:156.57.229.102|talk]]) 22:27, 10 January 2024 (UTC)

== Proposed merge of [[Delta]] with [[∆]] ==

∆ (U+2206 INCREMENT) is some unusual character; the disambiguated meanings are more likely to be written as the regular letter delta (Δ). This should either be renamed to [[Δ (disambiguation)]], or merged to the [[Delta]] disambiguation page, where the former title currently redirects and which has additional meanings listed. [[User:1234qwer1234qwer4|1234qwer]][[User talk:1234qwer1234qwer4|1234qwer]][[Special:Contribs/1234qwer1234qwer4|4]] 04:51, 2 March 2026 (UTC)