On p-local Topological Automorphic Forms for $U(1,1;\mathbb{Z}[i])$
  We present a new flavor of TAF-type (co)homology theories, which are p-local of height two and based on the isometry group of the odd unimodular hermitian lattice of signature (1,1) over the Gaussian integers. Using a suitable family of hyperelliptic curves, we explicitly construct a genus to automorphic forms, prove an integrality statement and verify Landweber's criterion. 
Hanno von Bodecker and Sebastian Thyssen
math.AT math.AG