The adjunction inequality for the Rasmussen invariant in negative-definite four-manifolds

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Let W=(#rCP2‾)∖B4W=(\#^r\overline{\mathbb{CP}^2})\setminus B^4 for some r≥0r\geq 0. Let L⊂∂W=S3L\subset\partial W=S^3 be a link, and let Σ⊂W\Sigma\subset W be a properly, smoothly embedded oriented surface with no closed components such that ∂Σ=L\partial\Sigma=L. The notation [Σ][\Sigma], ∣[Σ]∣|[\Sigma]|, and [Σ]⋅[Σ][\Sigma]\cdot[\Sigma] denotes the homology class of Σ\Sigma, its norm as used in the paper, and its self-intersection, respectively.

Adjunction conjecture for ss.

s(L)≤1−χ(Σ)−∣[Σ]∣−[Σ]⋅[Σ].s(L)\leq 1-\chi(\Sigma)-\left|[\Sigma]\right|-[\Sigma]\cdot[\Sigma].

This extends the Ozsváth–Szabó adjunction inequality for τ\tau and the paper's previously established null-homologous case to arbitrary properly embedded surfaces in punctured connected sums of negative complex projective planes. The supplied text does not indicate whether it has been resolved.

References

Primary source

Ciprian Manolescu, Marco Marengon, Sucharit Sarkar and Michael Willis, “A generalization of Rasmussen's invariant, with applications to surfaces in some four-manifolds”, arXiv:1910.08195 (2022).

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