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In the earliest days of MathOverflow, there was a '20 questions' seminar (see <http://sbseminar.wordpress.com/category/20-questions/>) run by graduate students at Berkeley. Many questions from the seminar were cross-posted to MathOverflow. This tag now exists solely for the historical record.

8 votes

Which sequences can be extended to analytic functions? (e. g., Ackermann's function)

Actually, there is an even stronger result, often called the interpolation theorem, which follows from a well-known theorem of Mittag-Leffler: Let $(z_n)$ be a sequence of complex numbers with no lim …
Malik Younsi's user avatar
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