EN
Let f(z) be a finite order transcendental meromorphic function such that λ(1/f(z)) < σ(f(z)), and let c ∈ ℂ∖{0} be a constant such that f(z+c) ≢ f(z) + c. We mainly prove that
$max{τ(f(z)),τ(Δ_{c}f(z))} = max{τ(f(z)),τ(f(z+c))} = max{τ(Δ_{c}f(z)),τ(f(z+c))} = σ(f(z))$,
where τ(g(z)) denotes the exponent of convergence of fixed points of the meromorphic function g(z), and σ(g(z)) denotes the order of growth of g(z).