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arXiv · 2610.22782

Exotic symplectomorphisms of strong fillings

Dušan Drobnjak
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Abstract

We prove a criterion for detecting exotic symplectomorphisms of strong fillings of closed contact manifolds. The criterion concerns symplectomorphisms induced by free contact circle actions on the boundary, and it is expressed purely in topological terms. As an application, we show that one-point blow-ups of an infinite family of Brieskorn varieties admit exotic compactly supported symplectomorphisms.

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Dušan Drobnjak. 2026-10-16. Exotic symplectomorphisms of strong fillings. https://arxiv.org/abs/2610.22782

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