Sangrok Oh

collaborators

5 papers

math.GR2026

Hierarchical geometry and right-angled Artin groups in graph braid groups

Byung Hee An, Sangrok Oh, Jihoon Park

For the unordered discrete configuration space $UD_{n} (Γ)$ of $n$ particles on a connected finite graph $Γ$ , we construct an explicit factor system on its univ…

math.GR2026

From algebraic orthogonality to RAAG embedding obstructions in hierarchically hyperbolic groups

Sangrok Oh, Jihoon Park

We introduce the $expanded core graph$ , which records minimal unbounded domains and their axial directions, for two classes of hierarchically hyperbolic group structures m…

math.GT2026

On the large-scale geometry of graph braid groups via cubical structures

Byung Hee An, Sangrok Oh

We study the large-scale geometry of graph braid groups $B_{n} (Γ)$ , viewed as the fundamental groups of discrete configuration spaces $U D_{n} (Γ)$ , which are spec…

math.GR2025

Embeddability of right-angled Artin groups into hierarchically hyperbolic groups

Sangrok Oh, Jihoon Park

For a hierarchically hyperbolic group, we give sufficient conditions ensuring that suitable powers of a finite collection of elements generate a right-angled Artin subgroup; under…