05/26/2011, 12:27 PM
let {x} = x - floor(x)
let f(x) be a nonlinear real-analytic function and satisfy for x > 0
f(f({x}/e)) = {x}/e
seems outside the books not ?
let f(x) be a nonlinear real-analytic function and satisfy for x > 0
f(f({x}/e)) = {x}/e
seems outside the books not ?

