This paper is concerned with the sensitivity of set-valued discrete systems. Firstly, this paper obtained the equivalence between ( ( ) ) 1, X , f ∞ or ( ( ) ) 1, Y , g ∞ and the product system ( ( ) ) 1, 1, X Y , f g ∞ ∞ × × in sensitivity, infinite sensitivity, -sensitivity, ( ) 1 2 , -sensitivity. Then, the relation between ( ) 1, X , f ∞ or ( ) 1, Y, g ∞ and ( ( ) ) 1, 1, X Y , f g ∞ ∞ × × in ergodic sensitivity is obtained. Where ( ( ) ) 1, X , f ∞ is the set-valued dynamical system induced by a non-autonomous discrete dynamical system ( ) 1, X , f ∞ .
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