A note on 0-bipolar knots of concordance order two
Chen, Wenzhao
Original · EN
Let T be the group of smooth concordance classes of topologically slice knots, and {0}⊂⊂ Tₙ₊₁ₙ⊂ ⊂ T₀⊂ T be the bipolar filtration. In this paper, we show that a proper collection of the knots employed by Hedden, Kim, and Livingston to prove Z₂∞ < T can be used to see Z₂∞ < T₀/T₁.
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