2 papers
math.SG2025
The rigid-flexible value for symplectic embeddings of four-dimensional ellipsoids into polydiscs
Alvin Jin, Andrew S. Lee
We consider the embedding function describing the problem of symplectically embedding an ellipsoid into the smallest scaling of the polydisc . Previous wo…
math.AT2024
Realisations of posets and tameness
Wojciech Chacholski, Alvin Jin, Francesca Tombari
We introduce a construction called realisation which transforms posets into posets. We show that realisations share several key features with upper semilattices. For example, we de…