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math.CO2024
Chain Conditions and Optimal Elements in Generalized Union-Closed Families of Sets
Cory H. Colbert
The union-closed sets conjecture (sometimes referred to as Frankl's conjecture) states that every finite, nontrivial union-closed family of sets has an element that is in at least…
math.SG2024
Rigid-flexible values for symplectic embeddings of four-dimensional ellipsoids into almost-cubes
Andrew Lee, Cory H. Colbert
We consider the embedding function describing the problem of symplectically embedding an ellipsoid into the smallest possible scaling by of the polydisc $P(…