activity
20122026
most citedDehn twists and free subgroups of symplectic mapping class groups

39 citations · 69 across the 8 of their papers we have counts for

collaborators

13 papers

math.SG2026

Splitting Symplectic Monodromy

Ailsa Keating, Ivan Smith, Michael Wemyss

We discuss some examples in which symplectic monodromy (provably or conjecturally) splits off the symplectic mapping class group, hoping to illustrate different techniques and inpu…

math.SG2025

Homological mirror symmetry for projective K3 surfaces

Paul Hacking, Ailsa Keating

We prove the homological mirror symmetry conjecture of Kontsevich for K3 surfaces in the following form: The Fukaya category of a projective K3 surface is equivalent to the derived…

math.SG2024

A universal mirror to as a birational object

Ailsa Keating, Abigail Ward

We study homological mirror symmetry for viewed as an object of birational geometry, with the standard meromorphic volume form. First, we construct universa…

math.SG2023★ 1 cited

Symplectomorphisms and spherical objects in the conifold smoothing

Ailsa Keating, Ivan Smith

Let denote the `conifold smoothing', the symplectic Weinstein manifold which is the complement of a smooth conic in , or equivalently the plumbing of two copies of $T^*…

math.SG2021

Symplectomorphisms of some Weinstein 4-manifolds

Paul Hacking, Ailsa Keating

Let M be a Weinstein four-manifold mirror to Y\D for (Y,D) a log Calabi--Yau surface; intuitively, this is typically the Milnor fibre of a smoothing of a cusp singularity. We intro…

math.GT2021

On the order of Dehn twists

Ailsa Keating, Oscar Randal-Williams

This note records the order of a higher dimensional Dehn twist in a range of topologically significant groups.

math.SG2020★ 25 cited

Homological mirror symmetry for log Calabi-Yau surfaces

Paul Hacking, Ailsa Keating, Wendelin Lutz

Given a log Calabi-Yau surface with maximal boundary and distinguished complex structure, we explain how to construct a mirror Lefschetz fibration , wh…

math.SG2020★ 4 cited

Families of monotone Lagrangians in Brieskorn--Pham hypersurfaces

Ailsa Keating

We present techniques, inspired by monodromy considerations, for constructing compact monotone Lagrangians in certain affine hypersurfaces, chiefly of Brieskorn-Pham type. We focus…

math.SG2017

On symplectic stabilisations and mapping classes

Ailsa Keating

We are interested in comparing properties of symplectic mapping class groups of symplectic manifolds of dimension four or higher with properties of classical mapping class groups o…

math.SG2017

Symplectomorphisms of exotic discs

Roger Casals, Ailsa Keating, Ivan Smith

We construct a symplectic structure on a disc that admits a compactly supported symplectomorphism which is not smoothly isotopic to the identity. The symplectic structure has an ov…

math.SG2015

Homological mirror symmetry for hypersurface cusp singularities

Ailsa Keating

We study versions of homological mirror symmetry for hypersurface cusp singularities and the three hypersurface simple elliptic singularities. We show that the Milnor fibres of eac…

math.SG2014

Lagrangian tori in four-dimensional Milnor fibres

Ailsa Keating

The Milnor fibre of any isolated hypersurface singularity contains many exact Lagrangian spheres: the vanishing cycles associated to a Morsification of the singularity. Moreover, f…

math.SG2012★ 39 cited

Dehn twists and free subgroups of symplectic mapping class groups

Ailsa Keating

Given two Lagrangian spheres in an exact symplectic manifold, we find conditions under which the Dehn twists about them generate a free non-abelian subgroup of the symplectic mappi…