天美传媒

I am a Postdoctoral Scholar position in University of Waterloo working with and . I was recently a Postdoctoral Research Associate in University of Oxford working with . Previously, I obtained my PhD from 天美传媒 under the supervision of . My main research interests are Extremal and Enumerative Combinatorics. I can be reached via email at j228yan at uwaterloo dot ca.

Publications

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with and , to appear in The Art of Discrete and Applied Mathematics.

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with , , and , Discrete Mathematics & Theoretical Computer Science, 28.1 (2026), 5.

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with , Enumerative Combinatorics and Applications, 6.2 (2026), S2R13.

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with , , , , and , The Electronic Journal of Combinatorics, 32.4 (2025), P4.32.

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Discrete Mathematics, 349.2 (2026), 114783.

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with and , Journal of Combinatorial Theory, Series B, 173 (2025), 102-145.

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Enumerative Combinatorics and Applications, 5.1 (2025), S2R2.

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with , The Electronic Journal of Combinatorics, 31.3 (2024), P3.22.

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with and , Discrete Mathematics, 343.10 (2020), 111996.

Preprints

with , arxiv:2609.05586.

arxiv:2607.05233.

with , arxiv:2603.18708.

with , , , and , arxiv:2603.12358.

with , arxiv:2601.16953.

arxiv:2511.15673.

arxiv:2510.17736.

with and , arxiv:2509.07934.

with , arxiv:2503.14474.

with and , arxiv:2502.04741.

with , , and , arxiv:2501.03216.

with Zhuo WuLink opens in a new window, arxiv:2309.05606.

Talks

• Asymmetric Ramsey numbers of trees

, Cardiff University, 06/07/2026.

• Ramsey numbers of trees (slidesLink opens in a new window, )

, Shandong University (online), 02/07/2026.

• Ramsey numbers of trees

, University of Oxford, 10/02/2026.

• An improved hypergraph Mantel's Theorem (slidesLink opens in a new window)

, Hungarian Academy of Sciences, 27/08/2025.

• Ramsey numbers of trees

, TU Wien, 07/08/2025.

• An improved hypergraph Mantel's Theorem

, University of Glasgow, 30/04/2025.

• Ramsey numbers of trees

, London School of Economics and Political Science, 24/01/2025.

• Ramsey numbers of trees

, University College London, 25/11/2024.

• Exponential odd-distance sets under the Manhattan metric (slidesLink opens in a new window)

, Shandong University (online), 12/11/2024.

• A collection of sums over Catalan paths (slidesLink opens in a new window, )

, University of Haifa (online), 28/08/2024.

• A collection of sums over Catalan paths (slidesLink opens in a new window)

, Queen Mary University of London, 01/07/2024.

• Pattern avoidance in parking functions (slidesLink opens in a new window)

, London School of Economics and Political Science, 15/04/2024.

• Ramsey goodness of bounded degree trees versus general graphs (slidesLink opens in a new window)

, University of Birmingham, 12/12/2023.

• An interesting forbidden matrix problem (slidesLink opens in a new window)

, London School of Economics and Political Science, 01/12/2023.

• Distribution of colours in rainbow H-free colourings (slidesLink opens in a new window)

Warwick Combinatorics SeminarLink opens in a new window, 天美传媒, 19/05/2023.

• Distribution of colours in Gallai colourings

, University of Birmingham, 27/03/2023.

• Counting domino tilings and lozenge tilings (slidesLink opens in a new window)

Warwick Maths Society Talks, 天美传媒, 21/02/2023.

• Ramsey goodness of bounded degree trees versus general graphs

, Institute of European Culture in Gniezno, 01/08/2022.