In mathematics, the DenjoyâLuzinâSaks theorem states that a function of generalized bounded variation in the restricted sense has a derivative almost everywhere, and gives further conditions of the set of values of the function where the derivative does not exist. N. N. Luzin and A. Denjoy proved a weaker form of the theorem, and Saks ( 1937, theorem 7.2, page 230) later strengthened their theorem.
References
- Saks, StanisĹaw (1937), Theory of the Integral, Monografie Matematyczne, vol. 7 (2nd ed.), Warszawa- LwĂłw: G.E. Stechert & Co., JFM 63.0183.05, Zbl 0017.30004, archived from the original on 2006-12-12
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In mathematics, the DenjoyâLuzinâSaks theorem states that a function of generalized bounded variation in the restricted sense has a derivative almost everywhere, and gives further conditions of the set of values of the function where the derivative does not exist. N. N. Luzin and A. Denjoy proved a weaker form of the theorem, and Saks ( 1937, theorem 7.2, page 230) later strengthened their theorem.
References
- Saks, StanisĹaw (1937), Theory of the Integral, Monografie Matematyczne, vol. 7 (2nd ed.), Warszawa- LwĂłw: G.E. Stechert & Co., JFM 63.0183.05, Zbl 0017.30004, archived from the original on 2006-12-12
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