isabelle/valid/amc12b_2002_p11.thy (14 lines of code) (raw):
(*
Authors: Wenda Li
*)
theory amc12b_2002_p11 imports
Complex_Main
"HOL-Computational_Algebra.Computational_Algebra"
begin
theorem amc12b_2002_p11:
fixes a b::nat
assumes "prime a" and "prime b"
and "prime (a+b)" and "prime (a-b)"
shows "prime (a + b + (a - b + (a + b)))"
sorry
end