3 papers
math.CO2013
Minimal symmetric differences of lines in projective planes
Paul Balister, Béla Bollobás, Zoltán Füredi +1
Let q be an odd prime power and let f(r) be the minimum size of the symmetric difference of r lines in the Desarguesian projective plane PG(2,q). We prove some results about the fu…
math.NT2008
The Divisor Matrix, Dirichlet Series and SL(2,Z), II
Peter Sin, John G. Thompson
We examine an elliptic curve constructed in an earlier paper from a certain representation of $\SL(2,\Z)$ on the space of convergent Dirichlet series. The curve is observed to be a…
math.NT2007
The Divisor Matrix, Dirichlet Series and SL(2,Z)
Peter Sin, John G. Thompson
A representation of SL(2,Z) by integer matrices acting on the space of analytic ordinary Dirichlet series is constructed, in which the standard unipotent element acts as multiplica…