Is it possible to extend the Lebesgue measure as a translation-invariant measure from the Borel sigma-algebra to a sigma-algebra not contained in the Lebesgue sigma-algebra?
Asked
Active
Viewed 106 times
3
-
Look here. – Nov 01 '17 at 15:03
-
Thanks! It's intereseting though that the only reference given for this problem is an exercise in a single textbook, taking into account how natural this question is, and how non-trivial the construction seems to be. – user60121 Nov 02 '17 at 15:19