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Obstructing Unknotting Number Two For Some Alternating Knots

Published 26 Aug 2026 in math.GT | (2608.25256v1)

Abstract: We apply the dd-invariants of Ozsváth-Szabó and a theorem due to Brendan Owens to determine the unknotting numbers of 194 alternating knots with 13 or fewer crossings.

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