9 papers
Chordal signed graphs and signed bigraphs
Jing Huang, Ying Ying Ye
Chordal graphs and chordal bigraphs enjoy beautiful characterizations, in terms of forbidden subgraphs, vertex/edge orderings, vertex/edge separating sets, and tree-like representa…
Strong chordality in tournaments and multipartite tournaments with possible loops
Pavol Hell, César Hernández-Cruz, Jing Huang
Strongly chordal digraphs are included in the class of chordal digraphs and generalize strongly chordal graphs and chordal bipartite graphs. They are the digraphs that admit a line…
Measure equivalence classification of right-angled Artin groups: the finite classes
Camille Horbez, Jingyin Huang
Given a right-angled Artin group with finite outer automorphism group, we determine which right-angled Artin groups are measure equivalent (or orbit equivalent) to .
Exotic aspherical 4-manifolds
Michael Davis, Kyle Hayden, Jingyin Huang +2
We construct closed, aspherical, smooth 4-manifolds that are homeomorphic but not diffeomorphic. These provide counterexamples to a smooth analog of the Borel conjecture in dimensi…
Rigidity and classification results for large-type Artin groups
Jingyin Huang, Damian Osajda, Nicolas Vaskou
We compute the automorphism group of the intersection graph of many large-type Artin groups. This graph is an analogue of the curve graph of mapping class groups but in the context…
On spherical Deligne complexes of type
Jingyin Huang
Let be the Artin complex of the Artin group of type . This complex is also called the spherical Deligne complex of type . We show certain types of 6-cycles in the 1-s…