Bart Vandewoestyne wrote:
>
> Suppose you want to write about the point with index i in a
> mathematical text. Then how do you write this?
>
> The ith point.
> The i'th point.
> The i-th point.
Handwriting or typeset? It matters because properly typeset
mathematical text will have the "i" italicized, so "The ith point." will
be fine in as much as the "i" will stand out from the "th". "i'th" is
wrong, I would think, because "'" it hints at (at least in this sort of
context) missing letters; none are missing, are they?
"i-th" is fine in handwritten text.
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