*Daisuke Hirota (Graduate School of Science and Technology, Niigata University)
Let $C^{1}(I, \operatorname{Lip}(I))$ be the Banach algebra of all continuously differentiable maps from the closed unit interval $I=[0, 1]$ to the Banach algebra of all Lipschitz functions on $I$ with respect to a certain norm. We characterize surjective, not necessarily linear, isometries between $C^{1}(I, \operatorname{Lip}(I))$