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Dec 2, 2019 at 0:26 comment added Richard Stanley For power series with integer coefficients, there is Carlson's result that if such a power series has radius of convergence one, then either it is a rational function or the unit circle is a natural boundary. See Enumerative Combinatorics, vol..1, second ed., Exercise 4.46(c).
Nov 27, 2019 at 13:24 answer added Alexandre Eremenko timeline score: 10
Mar 14, 2012 at 23:27 vote accept Emilio Pisanty
Mar 5, 2012 at 18:53 answer added Pietro Majer timeline score: 11
Mar 5, 2012 at 14:37 answer added Gerald Edgar timeline score: 19
Mar 5, 2012 at 13:36 answer added Liviu Nicolaescu timeline score: 20
Mar 5, 2012 at 1:26 comment added Will Jagy I blame the parents.
Mar 4, 2012 at 20:51 answer added GH from MO timeline score: 18
Mar 4, 2012 at 20:00 history asked Emilio Pisanty CC BY-SA 3.0