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Smoothly non-isotopic Lagrangian disk fillings of Legendrian knots (1903.04731v2)
Published 12 Mar 2019 in math.GT and math.SG
Abstract: In this paper, we construct the first families of distinct Lagrangian ribbon disks in the standard symplectic 4-ball which have the same boundary Legendrian knots, and are not smoothly isotopic or have non-homeomorphic exteriors.
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