4 papers
Determinantal formulas with major indices
Thomas McConville, Donald Robertson, Clifford Smyth
We give a simple proof of a major index determinant formula in the symmetric group discovered by Krattenthaler and first proved by Thibon using noncommutative symmetric functions.…
Unique equilibrium states for some intermediate beta transformations
Leonard Carapezza, Marco López, Donald Robertson
We prove uniqueness of equilibrium states for subshifts corresponding to intermediate beta transformations with having the property that the orbit of 0 is bounded away from…
Uniform distribution of saddle connection lengths
Jon Chaika, Donald Robertson
For almost every flat surface the sequence of saddle connection lengths listed in increasing order is uniformly distributed mod one.
A proof of a sumset conjecture of Erdős
Joel Moreira, Florian Karl Richter, Donald Robertson
In this paper we show that every set with positive density contains for some pair of infinite subsets of , settling a conjecture of E…