[FOM] outer measure of a non-measurable set

Martin Davis martin at eipye.com
Thu Mar 28 02:20:45 EDT 2013

A friend asked me. Can anything be said about the outer measure of a 
set containing one point from each equivalence class with respect to 
the relation x~y <=> x-y is rational, x,y in [0,1]?


Martin Davis
Professor Emeritus, Courant-NYU
Visiting Scholar, UC Berkeley
eipye + 1 = 0

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