Generalize ~ injresinjlem, ~ftc2re, ~ fdvposlt and co. (#2395)
Generalize ~ injresinjlem, ~ftc2re, ~ fdvposlt and co. (#2395)

* Decimal expansion and Misc.

* Reverting to the prefix notation for decimal expansion.

* Adding a link to the original mailing list discussion on decimal point.

* Fix typo and uncomment equality theorems

* Fix Benoît's remarks, generalize  ~ elfznelfzo and ~ elfznelfzob

* Generalize ~ injresinjlem, ~ftc2re, ~ fdvposlt and co.
metamath/set.mm,metamath/set.mm,metamath/set.mm