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Jun 22, 2016 at 0:03 comment added Mark Lewko This doesn't directly answer your question but there is a result of Katznelson which states that for any measure 0 set there is a continuous function with a Fourier series diverging on it (see: Y. Katznelson, "Sur les ensembles de divergence des séries trigonométriques", Studia Mathematica 26: 301–304, 1966).
Jun 21, 2016 at 23:38 comment added Christian Remling Yes, there are many results along these lines. You could take a look at Carleson's own book on exceptional sets, and Zygmund has some discussion of this too in his book.
Jun 21, 2016 at 23:30 review First posts
Jun 21, 2016 at 23:54
Jun 21, 2016 at 23:28 history asked Rob F CC BY-SA 3.0