Authors derive a closed-form formula for Gompf's θ-invariant of canonical contact structures on Seifert fibered 3-manifolds and a recursive formula for general plumbing trees using Legendrian surgery descriptions.
¨Uber Modifikationen und exzeptionelle analytische Mengen.Math
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The Gompf $\theta$-Invariant of Canonical Contact Structures via Legendrian Surgery
Authors derive a closed-form formula for Gompf's θ-invariant of canonical contact structures on Seifert fibered 3-manifolds and a recursive formula for general plumbing trees using Legendrian surgery descriptions.