3 papers
math.AG2025
Quantum periods, toric degenerations and intrinsic mirror symmetry
Sam Johnston
Given a Fano variety , and an affine log Calabi-Yau variety given as the complement of an anticanonical divisor , we prove that for any snc compactification …
math.FA2024
On the limiting Horn inequalities
Samuel G. G. Johnston, Colin McSwiggen
The Horn inequalities characterise the possible spectra of triples of -by- Hermitian matrices . We study integral inequalities that arise as limits of Horn inequalitie…
math.AG2024
Intrinsic mirror symmetry and Frobenius structure theorem via Gromov-Witten theory of root stacks
Samuel Johnston
Using recent results of Battistella, Nabijou, Ranganathan and the author, we compare candidate mirror algebras associated with certain log Calabi-Yau pairs constructed by Gross-Sie…