On Tuesday, 29 October 2013 20:11:26 UTC+1, Virgil wrote: > In article <email@example.com>, > > firstname.lastname@example.org wrote: > > > > > On Thursday, 24 October 2013 19:47:28 UTC+2, Ben Bacarisse wrote: > > > > > > > I'd say that the union contains more than any single FISON. Which is not > > > > only possible, it's true. > > > > > > It cannot be true because in mathematics you have to prove that claim but you > > > cannot. Infinitely many unions of FISONs yield infinitely many FISONs but not > > > |N. > > > > But no one mentioned "infinitely many unions of FISONs", what was > > mentioned was one union of all members of any infinite set of FISONs.
Every FISON is a union of FISONs. There are infinitely many FISONs. So if mentioned or not, there are infinitely many unions that do not yield |N.