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math.AT2026
Cohomological rigidity of smooth toric Fano fourfolds
Suyoung Choi
We prove that any two smooth toric Fano fourfolds whose integral cohomology rings are isomorphic as graded rings are diffeomorphic.
math.AT2024
The cohomology rings of real permutohedral varieties
Suyoung Choi, Younghan Yoon
A permutohedral variety is a remarkable object in various areas of mathematics, and its topological invariants are widely recognized. However, only little is known about a real per…