3 citations · 5 across the 2 of their papers we have counts for
2 papers
math.CO2014★ 3 cited
Unifying duality theorems for width parameters in graphs and matroids. II. General duality
Reinhard Diestel, Sang-il Oum
We prove a general duality theorem for tangle-like dense objects in combinatorial structures such as graphs and matroids. This paper continues, and assumes familiarity with, the th…
math.AT2010★ 2 cited
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…