Groups with finitely many non-isomorphic factor-groups
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DOI: 10.1142/s0219498821502236
Abstract: We prove that if [Formula: see text] is either a hypercentral-by-finite group or a soluble Baer group and if [Formula: see text] has finitely many non-isomorphic factor-groups, then [Formula: see text] is a Chernikov group.… read more here.
Keywords: non isomorphic; finitely many; isomorphic factor; many non ... See more keywords
Knots with infinitely many non-characterizing slopes
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DOI: 10.2996/kmj/kmj44301
Abstract: Using the techniques on annulus twists, we observe that $6_3$ has infinitely many non-characterizing slopes, which affirmatively answers a question by Baker and Motegi. Furthermore, we prove that the knots $6_2$, $6_3$, $7_6$, $7_7$, $8_1$,… read more here.
Keywords: characterizing slopes; infinitely many; non characterizing; knots infinitely ... See more keywords