Simona Boyadzhiyska

Research

You can find my Google Scholar profile here.

Publications

• Ramsey simplicity of random graphs (with D. Clemens, S. Das, and  P. Gupta)
  Combinatorics, Probability and Computing

• On the chromatic number of powers of subdivisions of graphs (with M. Anastos, S. Rathke, and J. Rué)

Discrete Applied Mathematics, 360, 506-511

• Ramsey goodness of k-uniform paths, or the lack thereof  (with A. Lo)
  European Journal of Combinatorics, 104021

• On the use of senders for asymmetric tuples of cliques in Ramsey theory  (with T. Lesgourgues)
  Journal of Combinatorial Theory, Series B 169, 63-95

• Ramsey equivalence for asymmetric pairs of graphs (with D. Clemens, P. Gupta, and J. Rollin)
  SIAM Journal on Discrete Mathematics 38 (1), 55-74

• Covering grids with multiplicity (with A. Bishnoi, S. Das, and Y. den Bakker)
  Combinatorial Theory 3 (3)

• Subspace coverings with multiplicities (with A. Bishnoi, S. Das, and T. Mészáros)
  Combinatorics, Probability and Computing 32 (5), 782-795

• On the minimum degree of minimal Ramsey graphs for cliques versus cycles (with A. Bishnoi, D. Clemens, P. Gupta, T. Lesgourgues, and A. Liebenau)
  SIAM Journal on Discrete Mathematics 37 (1), 25-50

• Minimal Ramsey graphs with many vertices of small degree (with D. Clemens and  P. Gupta)
  SIAM Journal on Discrete Mathematics 36 (3), 1503-1528

• Enumerating extensions of mutually orthogonal Latin squares (with S. Das and T. Szabó)
  Designs, Codes and Cryptography 88, 2187-2206

• Classifications of definable subsets (with K. Lange, A. Raz, R. Scanlon, J. Wallbaum, and X. Zhang)
  Algebra and Logic 58 (5), 383-404

• Interval orders with two interval lengths (with G. Isaak and  A. N. Trenk)
  Discrete Applied Mathematics 267, 52-63

• A simple proof characterizing interval orders with interval lengths between 1 and k (with G. Isaak and  A. N. Trenk)
  Involve, a Journal of Mathematics 11 (5), 893-900

Preprints

• Simultaneous edge-colourings (with R. Lang, A. Lo, and M. Molloy)

• Odd-Ramsey numbers of complete bipartite graphs (with S. Das, T. Lesgourgues, and K. Petrova)

Conference proceedings

• Tight path, what is it (Ramsey-) good for? Absolutely (almost) nothing! (with A. Lo)
  European Conference on Combinatorics, Graph Theory and Applications (Eurocomb '23)

• Fixed-Point Cycles and Approximate EFX Allocations (with B. A. Berendsohn and L. Kozma)
  47th International Symposium on Mathematical Foundations of Computer Science (MFCS 2022)

Talks

Past

Here is a list of my most recent talks:

• 20.02.2025 - Simultaneous colorings of graphs
  Combinatorics Seminar, Rényi Institute

• 04.10.2024 - Simultaneous colourings of graphs
  Combinatorics Study Group, Queen Mary University of London

• 16.09.2024 - Simultaneous colourings of graphs

10th Polish Combinatorial Conference, Będlewo, Poland

• 05.07.2024 - Ramsey goodness of loose paths
  30th British Combinatorial Conference, Queen Mary University of London

• 16.04.2024 - Ramsey goodness of loose paths
  Mittagsseminar, ETH Zürich, Switzerland

• 03.11.2023 - Ramsey goodness of loose paths
  An Autumn Day of Combinatorics, Birmingham, UK

• 27.09.2023 - Ramsey goodness of loose paths
  Minisymposium "Extremal and Probabilistic Combinatorics" at the Annual Conference of the German Mathematical Society (DMV), Ilmenau, Germany

• 31.08.2023 - Tight path, what is it (Ramsey-)good for? Absolutely (almost) nothing!
  Eurocomb '23 in Prague, Czechia

• 30.06.2023 - Covering real grids with multiplicity
  Combinatorics Seminar, University of Warwick

• 18.05.2023 - Covering real grids with multiplicity
  Combinatorics Seminar, University of Birmingham

• 04.05.2023 - Tight path, what is it (Ramsey-)good for? Absolutely (almost) nothing!
  UCL Workshop in Extremal and Probabilistic Combinatorics

• 23.03.2023 - Covering real grids with multiplicity
  LSE Seminar on Combinatorics, Games and Optimisation

Teaching

In Autumn '23 I taught one quarter of the Advanced Topics in Combinatorics course for fourth-year students at UoB. The topic was "Extremal combinatorics meets finite geometry."  I also organized the Combinatorics Reading Group in the same semester, focusing on the Container Method.

In the past, I have been a TA for Discrete Mathematics I at FU Berlin and a tutor for various courses in Mathematics and Computer Science during my undergraduate studies at Wellesley College. I have also assisted with the Discrete Mathematics student seminars at FU Berlin, helping students prepare for their talks.

Activities and outreach

In March 2024, I co-organized the Spring Day of Combinatorics at the University of Birmingham together with Allan Lo.

During my Master's and PhD at the Berlin Mathematical School, I served as a Student Representative for a year, co-organized the 7th BMS Student Conference, and was involved in the organization of the "What is...?" student seminar. 

I'm passionate about teaching mathematics and enjoy participating in outreach activities and helping people learn a bit about what research in mathematics is like. Together with my colleagues from FU Berlin, I co-organized workshops (in German!) for Girls'Day in 2019 (on proofs of impossibility), 2021 (on randomness and human intuition), and 2022 (on positional games). In 2022, we also hosted two high-school students for an afternoon, as part of their "Praktikum."