Problem 9 (Extending Lipschitz functions). Assume AC Rm, and let f : A → R be Lipschitz. Show that there exists a Lipschitz function f: Rm → Rn such that f = f on A, Lip(f) ≤ √m Lip(ƒ). (1) (2)

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Need help proving this and there should be a correction : square root of n! not m.

Problem 9 (Extending Lipschitz functions). Assume A C Rm, and let ƒ : A → Rª be
Lipschitz. Show that there exists a Lipschitz function ƒ : Rm → R" such that
f = f on A,
Lip(f) ≤ √m Lip(f).
(1)
(2)
Transcribed Image Text:Problem 9 (Extending Lipschitz functions). Assume A C Rm, and let ƒ : A → Rª be Lipschitz. Show that there exists a Lipschitz function ƒ : Rm → R" such that f = f on A, Lip(f) ≤ √m Lip(f). (1) (2)
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