isabelle/valid/aime_1988_p3.thy (13 lines of code) (raw):

(* Authors: Albert Qiaochu Jiang *) theory aime_1988_p3 imports Complex_Main begin theorem aime_1988_p3: fixes x :: real assumes h0 : "0 < x" and h1 : "log 2 (log 8 x) = log 8 (log 2 x)" shows "(log 2 x)^2 = 27" sorry end