1 Jul
2004
1 Jul
'04
11:57 a.m.
I think the reason "between" isn't precise in English is that the intended meaning on a spoken "between" is almost always clear from context, so there isn't much motivation to have separate words. Circumlocution is used when necessary. If my conjecture is correct, then the equivalents of "between" in other spoken languages should be similarly ambiguous. Mathematics doesn't use context - at least within formulas and sequences of formulas, so it needs unambiguous terms.