"Comma" or "and"?
Case 1:
In §2.1 and §2.2 we prove ...
or
In §2.1, §2.2 we prove ...
Case 2:
As mentioned in Section 2 (§2.1 and §2.2) ...
or
As mentioned in Section 2 (§2.1, §2.2) ...
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2I can't think of any situation where you would use a comma rather than and between just two items. Where did you get that idea from?– JavaLatteSep 1, 2021 at 11:02
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@JavaLatte, I am not an English native speaker (I saw only "and", but I was thinking maybe the "comma" is also ok).– BenSep 1, 2021 at 11:07
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Perhaps you are thinking of 2.1, 2.2 and 2.3 where the first comma is OK?– mdeweySep 1, 2021 at 12:30
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1 Answer
Replacing “and” with a comma is “Headlinese”, where normal rules of grammar are superseded by the need for brevity. You should not do this in prose like your case 1.
However, I do like parenthetical comments or references to be brief, so I might use this technique in your case 2.
