35 citations · 212 across the 36 of their papers we have counts for
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Classification of real Bott manifolds and acyclic digraphs
Suyoung Choi, Mikiya Masuda, Sang-il Oum
We completely characterize real Bott manifolds up to affine diffeomorphism in terms of three simple matrix operations on square binary matrices obtained from strictly upper triangu…
Topological classification of quasitoric manifolds with the second Betti number 2
Suyoung Choi, Seonjeong Park, Dong Youp Suh
A quasitoric manifold is a -dimensional compact smooth manifold with a locally standard action of an -dimensional torus whose orbit space is a simple polytope. In this artic…
Real Bott manifolds and acyclic digraphs
Suyoung Choi, Sang-il Oum
Masuda (2008) provided the characterization of real Bott manifolds in terms of three operations on upper triangular matrices. We provide a combinatorial characterization of real Bo…
Combinatorial rigidity of 3-dimensional simplicial polytopes
Suyoung Choi, Jang Soo Kim
A simplicial polytope is combinatorially rigid if its combinatorial structure is determined by its graded Betti numbers which are important invariant coming from combinatorial comm…