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    • Modular forms with large coefficient fields via congruences 

      Dieulefait, Luis; Jiménez Urroz, Jorge; Ribet, Keneth (Springer, 2015-05-01)
      Open Access
      We use the theory of congruences between modular forms to prove the existence of newforms with square-free level having a fixed number of prime factors such that the degree of their coefficient fields is arbitrarily large. ...