periodic knots, 3-manifolds
One aspect of the study of 3-manifolds is to determine what infinite group actions a given manifold has. Some important questions that one can ask about these actions on a given manifold are: What periods could they have? and, what sets of points may be fixed by the action?
© 1985 Canadian Mathematical Society
E. Flapan, Infinitely periodic knots, Canadian Journal of Math., Vol. 37, no.1 (1985) 17-28. doi: 10.4153/CJM-1985-002-4