It is known that the Alexander ideal of a knot (i.e., a link of one component) is always a principal ideal since any tame knot in $S^3$ has a square presentation (Rolfsen, D. Knots and Links, pp. 206-207). Does the same hold for a link of more than one component?
2026-03-27 22:04:45.1774649085
Is the Alexander Ideal of a Link always Principal?
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