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::I find it interesting that my way puts the dots at a level where the omitted text would have been and your way puts the dots at a level where the immediately adjacent (not-omitted) text is. For example, I would write a set of binary operators as {{tmath|\{{mset|+, -, \times, \cdots\}}}} rather than {{tmath|\{{mset|+, -, \times, \ldots\}}}}.
::I agree that generally it would be awkward to omit the addition sign immediately before the ellipsis of a series. If we're looking for a contrived exception... suppose for each term you get to flip a coin to decide whether the next term is positive or negative. The the series might end up looking like {{tmath|{}-1 - x + x^2 + x^3 - x^4 + x^5 - x^6 \cdots}}. Yes, I warned you it was contrived. Would you also use cdots there? —[[User:Quantling|<span class="texhtml"><i>Q</i></span>uantling]] ([[User talk:Quantling|talk]] | [[Special:Contributions/Quantling|contribs]]) 18:42, 15 July 2025 (UTC)
:::In your contrived example the correct thing to do is either <math>-x^6 \pm \cdots</math> or <math>-x^6 \pm \ldots</math>. Personally I tend to use ldots when the operation is addition, but \cdots looks a lot better following \pm for some reason. --[[User:JayBeeEll|JBL]] ([[User_talk:JayBeeEll|talk]]) 00:47, 16 July 2025 (UTC)
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