17 citations · 20 across the 10 of their papers we have counts for
12 papers
Circuit Decomposition for Triangulations of Surfaces
Jens Harlander, Maizie Quatrone
An Euler circuit of a graph is a closed path that visits every edge of the graph exactly once. Euler circuit and circuit decomposition problems can also be formulated for higher di…
Local indicability in the presence of diagrammatic reducibility
Jens Harlander, Stephan Rosebrock
If a complex is a subcomplex of a diagrammatically reducible 2-complex that has locally indicable fundamental group, then has locally indicable fundamental group. This…
Relative Non-Positive Immersion
Jens Harlander, Stephan Rosebrock
A 2-complex has collapsing non-positive immersion if for every combinatorial immersion , where is finite, connected and does not allow collapses, either …
The Local Structure of Injective LOT-Complexes
Jens Harlander, Stephan Rosebrock
Labeled oriented trees, LOT's, encode spines of ribbon discs in the 4-ball and ribbon 2-knots in the 4-sphere. The unresolved asphericity question for these spines is a major test…
Ribbon 2-knot groups of Coxeter type
Jens Harlander, Stephan Rosebrock
Wirtinger presentations of deficiency 1 appear in the context of knots, long virtual knots, and ribbon 2-knots. They are encoded by (word) labeled oriented trees and, for that reas…
Relative Vertex Asphericity
Jens Harlander, Stephan Rosebrock
Diagrammatic reducibility DR and its generalization vertex asphericity VA are combinatorial tools developed for detecting asphericity of a 2-complex. Here we present tests for a re…