>>1080
>How? I don't quite understand the problem of taking "re loi ci prenu" as "two masses".
The function of "loi", as I understand it, is to indicate that the referents of the sumti participate together in whatever relationship we are claiming about them. Using a quantifier to bring in new participants (in this case, not just three people but more than one group with three people each) gives "loi" a new function, that I prefer not to give it. The inner quantifier of "LE (quantifier) prenu" should always give the total number of prenu in the universe of discourse.
> What are "fractional quantifiers"?
piro, pisu'o, piso'i, etc.
"the whole of", "some part of", "much of", ...
> What makes something a member of a set?
Just the definition of the set. I you have any (finite) number of things a, b, c, ..., n, there is always one and only one set that contains each and every one of them as its members, which can be repreasented as {a, b, c, ..., n}. Those things don't need to share any special property, the set of them always exists.