Talk:Subset
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Subset has been listed as a level4 vital article in Mathematics. If you can improve it, please do. This article has been rated as CClass. 
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Symbols ⊊ and ⊋[edit]
The section "⊂ and ⊃ symbols" only mentions the symbols ⊊ and ⊋ as something some authors prefer not to use. The reference there does not mention these symbols. It would be useful to find a positive reference for authors that do prefer to use ⊊ and ⊋ for proper sub/supersets, and use ⊂ and ⊃ where the two sets may be equal. — Preceding unsigned comment added by Kopretinka (talk • contribs) 10:14, 27 November 2017 (UTC)
 There's a whole list at Wikipedia talk:WikiProject Mathematics/Conventions#Literature survey. That's part of what I would call an obsolete discussion from more than a decade ago, but should be a good resource to find authors who do various things. Trovatore (talk) 19:27, 27 November 2017 (UTC)
Proper subset/superset[edit]
It would be useful if the article explains or defines what the proper subset and superset *is* before introducing the symbols for them. 86.12.162.37 (talk) 16:32, 12 January 2018 (UTC)
 This is done in the section on definitions, which comes before the section on this notation. Bill Cherowitzo (talk) 20:03, 12 January 2018 (UTC)
 No it's not. I agreed with the OP, it is not clear at all from this article what a *proper* sub/superset is from this article. I had to look this up on another website. JHBonarius (talk) 08:13, 11 March 2018 (UTC)
 Please indicate what part of this is not clear.
If A is a subset of B, but A is not equal to B (i.e. there exists at least one element of B which is not an element of A), then
 A is also a proper (or strict) subset of B; this is written as
 or equivalently
 B is a proper superset of A; this is written as
 I copied that from the definitions section. What would you suggest to improve the wording? Bill Cherowitzo (talk) 18:16, 11 March 2018 (UTC)
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