document.write("« Failure of $L^2$ boundedness of gradients of single layer potentials for measures with zero low density. (arXiv:1801.08453v1 [math.CA])");document.write(" | ");document.write("Fermionic formulas for eigenfunctions of the difference Toda Hamiltonian. (arXiv:0812.2306v2 [math.QA] UPDATED) »");