“…Although the original version of this argument required a number of improvements to the usual Taylor-Wiles method (Dickinson overcame some technical issues when p = 2 [73] and Shepherd-Barron-Taylor proved some new cases of Serre's conjecture for SL 2 (F 4 ) and SL 2 (F 5 )-representations in [157]), it was ripe for generalization to totally real fields 15 After a key early improvement by Kassaei [106], the n = 2 Artin conjecture for totally real fields is now completely resolved under the additional assumption that the representation is odd by a number of authors, including Kassaei-Sasaki-Tian and Pilloni-Stroh [108,107,109,152,141,143]. On the other hand, the reliance on q-expansions in this argument has proved an obstruction to extending this to other groups.…”