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This paper characterizes the hermitian operators on spaces of Banach-valued Lipschitz functions.

Let (X, d X) and (Y,d Y) be pointed compact metric spaces with distinguished base points e X and e Y. The Banach algebra of all $𝕂$-valued Lipschitz functions on X - where $𝕂$ is either‒or ℝ - that map the base point e X to 0 is denoted by Lip0(X). The peripheral range of a function f ∈ Lip0(X) is the set Ranµ(f) = f(x): |f(x)| = ‖f‖∞ of range values of maximum modulus. We prove that if T 1, T 2: Lip0(X) → Lip0(Y) and S 1, S 2: Lip0(X) → Lip0(X) are surjective mappings such that $Ra{n}_{\pi }\left(T_1\left(f\right)T_2\left(g\right)\right)\cap Ra{n}_{\pi }\left(S_1\left(f\right)S_2\left(g\right)\right)\ne \varnothing$ for all f, g ∈ Lip0(X),...