Automorphic L-functions and functoriality

@inproceedings{Shahidi2002AutomorphicLA,
  title={Automorphic L-functions and functoriality},
  author={Freydoon Shahidi},
  year={2002}
}
This is a report on the global aspects of the Langlands-Shahidi method which in conjunction with converse theorems of Cogdell and Piatetski-Shapiro has recently been instrumental in establishing a significant number of new and surprising cases of Langlands Functoriality Conjecture over number fields. They have led to striking new estimates towards Ramanujan and Selberg conjectures.