arXiv subjects

Elliot Gathercole

Publications and source records attributed to Elliot Gathercole.

2 recordsLinked to original sources

arXiv2026

Widths of Complements of Skeleta

We establish some sufficient conditions for the Lagrangian skeleton of the affine complement of an effective ample Q-divisor in a smooth rationally connected projective variety to be a Lagrangian barrier in the sense of Biran, and establish bounds on the Gromov width of the complement of the skeleton. We particularly focus on hyperplane arrangements in projective space, where we obtain tight bounds in two dimensions when the divisor is a generic collection of at least three lines.

math.SG↗

arXiv2024

Superheavy Skeleta for non-Normal Crossings Divisors

Given an anticanonical divisor in a projective variety, one naturally obtains a monotone K\"ahler manifold. In this paper, for divisors in a certain class (larger than normal crossings), we construct smoothing families of contact hypersurfaces with controlled Reeb dynamics. We use these to obtain subsets of the divisor complement which are superheavy. In particular, we will show that several examples of Lagrangian skeleta of such divisor complements are superheavy, in cases where applying Lagrangian Floer theory may be intractable.

math.SG↗