Corrigendum to Knots and 4-manifolds
Winter Braids IX (Reims, 2019), Winter Braids Lecture Notes (2019), Talk no. 2bis, 1 p.

We replace an example which was based on an unjustified claim with a question.

DOI: 10.5802/wbln.31
Owens, Brendan 1

1 School of Mathematics and Statistics,University of Glasgow, Glasgow, G12 8SQ, United Kingdom
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Owens, Brendan. Corrigendum to Knots and 4-manifolds, in Winter Braids IX (Reims, 2019), Winter Braids Lecture Notes (2019), Talk no. 2bis, 1 p. doi : 10.5802/wbln.31. http://archive.numdam.org/articles/10.5802/wbln.31/

[1] David Gabai, Genus is superadditive under band connected sum, Topology 26 (1987), no. 2, 209–210. | DOI | MR | Zbl

[2] Brendan Owens, Knots and 4-manifolds, Winter Braids Lecture Notes 6 (2019), Exposé no. 2, 26 p. | DOI | MR | Zbl

[3] Martin Scharlemann, Smooth spheres in R 4 with four critical points are standard, Invent. Math. 79 (1985), no. 1, 125–141. | DOI | MR | Zbl

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