Yangjing Long 龙旸靖

Associate Professor · School of Mathematics and Statistics · Central China Normal University

📍 152 Luoyu Road, Wuhan 430079, China

✉️ yangjing(at)mail(dot)ccnu(dot)edu(dot)cn

School Homepage ORCID: 0000-0001-5934-1326 Dissertation Erdős number: 2

Contents: About Research Grants Selected Publications Other Publications Preprints Guidance Service

Personal Information

I am currently an associate professor at the School of Mathematics and Statistics, Central China Normal University. I received my PhD from the Max Planck Institute for Mathematics in the Sciences. My advisors were Jürgen Jost and Peter F. Stadler. My dissertation defense was on October 18, 2014.

I completed my BS in mathematics at Shanghai Jiao Tong University. My Erdős number is 2 (optimal).

Research Interests

My research interests are in graph theory and phylogenetic combinatorics, including combinatorics in the application of biology and quantum information, as well as AI for mathematics and science.

Graph Theory Phylogenetic Combinatorics Combinatorics in Biology Quantum Information AI for Math and Science

Dissertation: Relations Between Graphs.

Grants

Period	Role	Project	Funding
2025–2027	Principal Investigator	Open Research Project of Fuzhou University	50,000 RMB
2024–2026	Collaborator	Open Research Project of Central China Normal University, cooperated with Chongqing University of Technology	50,000 RMB
2025–2027	Collaborator	Open Research Project of Central China Normal University, cooperated with Zhejiang Normal University	20,000 RMB
2025–2026	Principal Investigator	Huawei Horizontal Project, Ascend Program	40,000 RMB
2020–2022	Principal Investigator	Path Systems of Edge-Labeled Phylogenetic Trees, No. 20201191803; Youth Fund, National Natural Science Fund for Chinese Postdocs, China	250,000 RMB
2019–2020	Principal Investigator	Fundamental Research Funds for the Central Universities	100,000 RMB
2018–2019	Principal Investigator	Fundamental Research Funds for the Central Universities	100,000 RMB
2018–2021	Main Participant	Contextuality as a Resource in Quantum Computation (61771011), National Natural Science Fund, China	520,000 RMB
2017–2020	Main Participant	Discrete Dynamics and Beyond (11671258), National Natural Science Fund, China	480,000 RMB
2016–2017	Principal Investigator	Some Problems on Graph Homomorphisms, No. 154463, National Natural Science Fund for Chinese Postdocs, China	50,000 RMB

Selected Publications

1. Inference of Phylogenetic Trees from the Knowledge of Rare Evolutionary Events, joint with M. Hellmuth, M. Hernandez-Rosales, and P. F. Stadler, Journal of Mathematical Biology, 2018, 76(7): 1623–1653.
2. Fractal Property of Homomorphism Order, joint with J. Fiala, J. Hubicka, and J. Nešetřil, European Journal of Combinatorics, 2017, 66: 101–109.
3. Universality of Intervals of Line Graph Order, joint with J. Fiala and J. Hubicka, European Journal of Combinatorics, 2014, 41: 221–231.
4. Demosaicking Recognition with Applications in Digital Photo Authentication Based on a Quadratic Pixel Correlation Model, joint with Y. Huang, CVPR, 2008.

Other Publications

• A Characterization of Multigraphs Reaching Goldbuer’s Bound of Chromatic Index, joint with Qiong Fan, Chunxiang Wang, and Shijing Wang, Journal of Graph Theory, 2026, 111(4): 99–112.
• Neighbor Sum Distinguishable k-Edge Colorings of Joint Graphs, joint with Xiangzhi Tu, Peng Li, and Aifa Wang, Journal of Combinatorial Optimization, 2025, 49(1): 123–135.
• On the Unit Interval Graphs Which Are Paired-Disjoint Path Coverable, joint with P. Li and T. Liu, Discrete Mathematics, Algorithms and Applications, 2024, 16(08), 2350105.
• Word-Representability of Split Graphs, joint with S. Kitaev, J. Ma, and H. Wu, Journal of Combinatorics, 2022, 12(4): 725–746.
• Unrooted Non-Binary Tree-Based Phylogenetic Networks, joint with Mareike Fischer, Michelle Galla, Lina Herbst, and Kristina Wicke, Discrete Applied Mathematics, 2021, 294: 10–30.
• Exact-2-Relation Graphs, joint with P. F. Stadler, Discrete Applied Mathematics, 2020, 285: 212–226.
• Classes of Tree-Based Networks, joint with Mareike Fischer, Michelle Galla, Lina Herbst, and Kristina Wicke, Visual Computing for Industry, Biomedicine, and Art, 2020, 3(1): 12.
• A Short Note on Undirected Fitch Graphs, joint with M. Geiß, M. Hellmuth, and P. F. Stadler, The Art of Discrete and Applied Mathematics, 2018, 1(1).
• Reconstructing Unrooted Phylogenetic Trees from Symbolic Ternary Metrics, joint with S. Grünewald and Y. Wu, Bulletin of Mathematical Biology, 2018, 80: 1563–1577.
• Gaps in Full Homomorphism Order, joint with J. Fiala and J. Hubicka, Electronic Notes in Discrete Mathematics, 2017, 61: 429–435.
• An Universality Argument for Graph Homomorphisms, joint with J. Fiala and J. Hubicka, Electronic Notes in Discrete Mathematics, 2015, 49: 643–649.
• Relations Between Graphs, joint with J. Hubicka, J. Jost, P. Stadler, and L. Yang, Ars Mathematica Contemporanea, 2012, 6(2): 323–350.
• On Orthogonal Polynomial Approximation with the Dimensional Expanding Technique for Precise Time Integration in Transient Analysis, joint with Y. Huang, Communications in Nonlinear Science and Numerical Simulation, 2007, 12(8): 1584–1603.
• The Correspondence Between Zero-Divisor Graphs with 6 Vertices and Their Semigroups, joint with Y. Huang, Journal of Algebra and Its Applications, 2007, 6(2): 287–290.

Preprints

• Exact Leaf Powers on Cycles, Ladders, Crowns, and Multipartite Block Graphs, joint with P. Li, submitted.
• Fixed-Charge Saturation and Two-Weight Domination for the k-th Roman Domination Problem on Interval Graphs, joint with P. Li, submitted.
• Defining a Phylogenetic Tree with the Minimum Number of Small-State Characters, joint with T. Wang, submitted.
• The AT-Number of the Line Graph of Multicircuits and Multicomplete Bipartite Graphs, joint with G. Chen, J. Kozik, X. Zhu, and J. Zhu, submitted.
• The Quantum Homomorphism Orders Are Universal, submitted.
• A Characterization of Level-k Realizability for Clustering Systems, joint with S. Dai, submitted.
• Computing the Arc-Deletion Distance to Orchard Networks Is NP-Hard, joint with Z. Liu and P. Li, submitted.
• On the Generalized Nearest Neighbor Interchange Operations, joint with Stefan Grünewald, Peter Humphries, and Taoyang Wu.
• Constrained Homomorphism Partial Orders, joint with J. Fiala and J. Hubicka.
• Proximity Measures for Classes of Phylogenetic Networks, joint with L. van Iersel, M. Jones, E. Julien, and Y. Murakami.

Competition Guidance

• First Prize, 2023 Postgraduate Mathematical Modeling Competition, Top 1%.

Service

• Member, Specialized Committee on Math and AI, Chinese Mathematical Society.
• Reviewer for MathSciNet, 2018–present.

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