This may be an extremely stupid and elementary question, but is there a name for sequences $\{a_i\}$ such that $\lim_{n\to\infty} \left( \frac{1}{n}\sum_{i=1}^{n} a_i\right)$ exists? ThisThis seems to be a separate condition from boundedness or summability.
added (terminology) tag - the question has been bumped anyway by a new answer
Martin Sleziak
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