Walji, Nahid2014-12-302014-12-302014-12-30201410.1090/S0002-9947-2014-06103-5https://infoscience.epfl.ch/handle/20.500.14299/109590WOS:000344826000017We obtain a sharp refinement of the strong multiplicity one theorem for the case of unitary non-dihedral cuspidal automorphic representations for GL(2). Given two unitary cuspidal automorphic representations for GL(2) that are not twist-equivalent, we also find sharp lower bounds for the number of places where the Hecke eigenvalues are not equal, for both the general and non-dihedral cases. We then construct examples to demonstrate that these results are sharp.text::journal::journal article::research article