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Published in 2021 at "Journal of Mathematical Sciences"
DOI: 10.1007/s10958-021-05198-5
Abstract: With the help of the ping-pong lemma it is proved that some 2-generated subgroups of the group of infinite unitriangular integer matrices are free. Some of these examples are similar to the celebrated examples by…
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Keywords:
group infinite;
group group;
free group;
infinite unitriangular ... See more keywords