Minimal Symmetric Differences of Lines in Projective Planes
Paul Balister, Béla Bollobás, Zoltán Füredi, John Thompson · Journal of Combinatorial Designs · 2014
Let q be an odd prime power and let be the minimum size of the symmetric difference of r lines in the Desarguesian projective plane . We prove some results about the function , in particular showing that there exists a constant such that for .