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In mathematics, the Federer–Morse theorem, introduced by Federer and Morse ( 1943), states that if f is a surjective continuous map from a compact metric space X to a compact metric space Y, then there is a Borel subset Z of X such that f restricted to Z is a bijection from Z to Y. ^[1] Moreover, the inverse of that restriction is a Borel section of f—it is a Borel isomorphism. ^[2]

• Uniformization
• Hahn–Banach theorem

• Baggett, Lawrence W. (1990), "A Functional Analytical Proof of a Borel Selection Theorem", Journal of Functional Analysis, 94: 437–450
• Fabec, Raymond C. (2000). Fundamentals of Infinite Dimensional Representation Theory. CRC Press. ISBN  978-1-58488-212-1.
• Federer, Herbert; Morse, A. P. (1943), "Some properties of measurable functions", Bulletin of the American Mathematical Society, 49: 270–277, doi: 10.1090/S0002-9904-1943-07896-2, ISSN  0002-9904, MR  0007916
• Parthasarathy, K. R. (1967). Probability measures on metric spaces. Probability and Mathematical Statistics. New York-London: Academic Press, Inc.

• L. W. Baggett and Arlan Ramsay, A Functional Analytic Proof of a Selection Lemma, Can. J. Math., vol. XXXII, no 2, 1980, pp. 441–448.