isabelle/valid/imo_1979_p1.thy (14 lines of code) (raw):
(*
Authors: Wenda Li
*)
theory imo_1979_p1
imports Complex_Main "HOL-Computational_Algebra.Computational_Algebra"
begin
theorem imo_1979_p1:
fixes p q :: nat
assumes "0 < q"
and "(\<Sum> k \<in> {1..<1320}. ((-1) ^ (k + 1) * (1 / k)))
= p / q"
shows "1979 dvd p"
sorry
end