Cobordisms to weakly splittable links
classification
🧮 math.GT
keywords
cobordismlinkweaklyadmitsalexandercobordismsflatgeneralises
read the original abstract
We show that if a link L with non-zero Alexander polynomial admits a locally flat cobordism to a `weakly m-split link', then the cobordism must have genus at least (m-1)/2. This generalises a recent result of J. Pardon.
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