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POINTS ACCESSIBLE IN AVERAGE BY REARRANGEMENT OF SEQUENCES II
Pages : [61] - [88]
Received : June 20, 2023
Communicated by : Professor Francisco Bulnes
Abstract
We continue investigating the set of limit points of averages of rearrangements of a given sequence. First we generalize results from the previous paper: if a sequence is a composition of two sequences, one of which is bounded and one of which tends to infinity, then we show necessary and sufficient condition for expecting non-trivial accessible points. A new case will be studied too: the sequences composed of two sequences, one tending to the other tending to Then we start to study accumulation points of the averages of rearranged sequences and prove that if a sequence has 4 accumulation points then any closed set in can be represented as the set of accumulation points of the averages of a certain rearranged sequence.
Keywords
rearrangement of sequence, arithmetic mean.