Undirected Connectivity of Sparse Yao Graphs

Unfolding Convex Polyhedra via Quasigeodesic Star Unfoldings

Unfolding Manhattan Towers

Unfolding Orthogonal Polyhedra with Quadratic Refinement: The Delta-Unfolding Algorithm

Unfolding Orthogonal Terrains

Unfolding Restricted Convex Caps

Unfolding Smooth Primsatoids

Universal Reconfiguration of (Hyper-)cubic Robots

Unsolved Problems in Visibility Graphs of Points, Segments and Polygons

Untangling a Planar Graph

Untangling polygons and graphs

Ununfoldable Polyhedra with Convex Faces

Upper Bound on the Number of Vertices of Polyhedra with $0,1$-Constraint Matrices

Upper bounds for centerlines

Upright-Quad Drawing of st-Planar Learning Spaces