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Expressible sets

Jaroslav Hancl
(University of Ostrava)
Analyseseminar
Torsdag, 23 november, 2017, at 16:15-17:15, in Aud. D3 (1531-215)
Abstrakt:

Let $A=\{a_n\}_{n=1}^\infty$ be a sequence of positive reals. In the spirit of the Erdös we say that $ E_A=\{ \sum_{n=1}^\infty \frac{1}{c_na_n}; c_n \mbox{is a positive integer}\}$ is an expressible set of the sequence $A$. We study certain properties of such kind of sets.

Kontaktperson: Simon Kristensen