Budapest Problem Exchange in Mathematics                            Problem No. 4

Area: Set theory, measure theory

Title: Measuring the set of straight lines

Problem Description: Is it true that if every set of reals with cardinal tex2html_wrap_inline20 is meagre (or of measure zero) then the union of tex2html_wrap_inline20 straight lines on the plane is also meagre (or of measure zero)?


Contact person: Péter Komjáth (

Posted by: Vince Grolmusz (

Originated from: Péter Komjáth (

Vince Grolmusz

Wed Mar 18 20:51:37 MET 1998