Eigenspaces of Newforms with Nontrivial Character

Markos Karameris

Let $S_k(\hat{I}{“}_0(N),\ddot{I}‡)$ denote the space of holomorphic cuspforms with Dirichlet character $\ddot{I}‡$ and modular subgroup $\hat{I}{“}_0(N)$. We will characterize the space of newforms $S_{k}^{n…