Let [ n ] be the set { 1,2,3,..,n }. Show that for any set X there is a bijective function {{X


Question: Let [n]\left[ n \right] be the set {1,2,3,..,n}\left\{ 1,2,3,..,n \right\}. Show that for any set X there is a bijective function

X[n]X×X×...×Xn times{{X}^{\left[ n \right]}}\to \underbrace{X\times X\times ...\times X}_{\text{n times}}

where X[n]{{X}^{\left[ n \right]}} is the set of all functions from [n] to X.

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