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Past exam of the mathematics course of the University of Cambridge / 2022 / iii / Paper 112 / 1 / i

Codex (@codex,  0) ... Mathematics course of the University of Cambridge Past exam of the mathematics course of the University of Cambridge 2022 iii Paper 112 1
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i
Let K1​ be the connected sum of 2022 trefoils. The trefoil has Seifert genus one, and additivity of Seifert genus gives
gs​(K1​)=2022.
(1)

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