Talks

Please ask me for slides.

Plenary Speaker Conferences/Workshops

• On Boolean Degree 1 Functions, Anti-Designs, and Cameron-Liebler Sets in Finite Vector Spaces, 5th Pythagorean Conference, Kalamata, Greece, 2025.
• On Boolean degree 1 functions (Cameron-Liebler sets) in finite vector spaces, The International Conference and PhD-Master Summer School on Graphs and Groups, Complexity and Convexity, Shijiazhuang, Hebei, China, 2024.
• Quadratic forms and clique-free graphs, CanaDAM 2023, Winnipeg, Manitoba, Canada, 2023.
• The Coclique Number of Orthogonality Graphs, Three days of computational methods for extremal discrete geometry, Köln, Germany, 2022.
• Low Degree Boolean Functions in Finite Geometry, Finite Geometry and Extremal Combinatorics, Newark, Delaware, USA, 2019.
• Polymath 10: Inequalities Related to the Sunflower Conjecture, IntersectionFest 2016, VCU, Richmond, Virginia, 2016.

Plenary Speaker Conferences/Colloquia/Online Workshop

• Variations of the Erdős-Ko-Rado problem, Open Problems in Algebraic Combinatorics, Waterloo, Canada, 2021.
• Erdős-Ko-Rado Sets in Finite Geometries, Colloquium to the memory of Thomas Ihringer. TU Darmstadt, 2015.
• On the Maximum Size of M-Cliques of Generators on Hermitian Polar Spaces. Colloquium on Galois geometry. To the memory of Frédéric Vanhove. Ghent, 2014.

Plenary Speaker at my Affiliation (at the time of the talk)

• Regular Intersecting Families and Low Degree Boolean Functions, SUSTech, Shenzhen, China, 2024.
• Some methods for modifying strongly regular graphs, SUSTech, Shenzhen, China, 2024.
• Cospectral Strongly Regular Graphs in Geometrical Settings, Prairie Discrete Math Workshop 2017, Lumsden, Saskatchewan, Canada, 2017.
• Erdős-Ko-Rado Mengen in endlichen Polarräumen (German), 100. Baerkolloquium, Gießen, 2013.

Seminar/Invited Session/Online Workshop Talks

• Equitable Bipartitions in Grassmann Graphs with respect to the Second Largest Eigenvalue, Anhui University, Hefei, Anhui, China, 2024.
• Some methods for modifying strongly regular graphs, TU Darmstadt, Darmstadt, Germany, 2023.
• Strongly regular graphs satisfying the 4-vertex condition, Dutch-Belgian Discrete Math Seminar, VUB, Brussels, Belgium, 2023.
• Some methods for modifying strongly regular graphs, TU Delft, Delft, The Netherlands, 2023.
• Switchings from Strongly Regular Graphs, Zoom Seminar, Combinatorics Seminar U. Wisconsin-Madison Mathematics, Madison, Wisconsin, USA, 2023.
• Low Degree Boolean Functions in Grassmann Graphs, Seminar of TWAG Study Group (Recording), National Sun Yat-sen University, Sizihwan, Taiwan, 2022.
• Strongly Regular Graphs, Seminar of TWAG Study Group (Recording), National Sun Yat-sen University, Sizihwan, Taiwan, 2022.
• Caps and Probabilistic Methods, University of Regina, Regina, Saskatchewan, Canada, 2022.
• Caps and Probabilistic Methods, University of Delaware, Newark, Delaware, USA, 2022.
• Low Degree Sets in Finite Geometry, UC San Diego Combinatorics Seminar, La Jolla, California, USA, 2021.
• The Erdős-Matching Conjecture, Low Degree Boolean Functions and Their q-Analogs, Sabanci Algebra Seminar (Zoom), Turkey, 2021.
• Pseuodrandom Cliquefree Graphs, Finite Geometry, and Spectra, Zoom Seminar, Waterloo University, Algebraic Graph Theory Seminar, Waterloo, Canada, 2020.
• Extremal eigenvalues of (generalized) Hamming graphs, Johnson graphs, and Grassmann graphs, Zoom Seminar, University of Western Australia, Perth, Australia, 2020.
• Low Degree Boolean Functions in Finite Geometry, University of Western Australia, Perth, Australia, 2019.
• A Construction for Cospectral Graphs, University of Delaware, Newark, Delaware, USA, 2019.
• A Construction for Cospectral Graphs, University of Bergen, Bergen, Norway, 2019.
• Rank Bounds on the Independence Number, Ben-Gurion University of the Negev, Beersheba, Israel, 2019.
• Rank Bounds on the Independence Number, FU Berlin, Berlin, Germany, 2019.
• Boolean Degree 1 Functions on Some Classical Domains, University of Bergen, Bergen, Norway, 2019.
• Three Perspectives on Boolean Degree 1 Functions, Tohoku University, Sendai, Japan, 2018.
• Subsets in Association Schemes, Tel Aviv University, Tel Aviv, Israel, 2018.
• Ovoids in Generalized Quadrangles, University of Wyoming, Laramie, Wyoming, USA, 2017.
• Large Erdős-Ko-Rado Sets in Polar Spaces, Colorado State University, Fort Collins, Colorado, USA, 2017.
• Ovoids in Generalized Quadrangles, University of Delaware, Newark, Delaware, USA, 2017.
• Intriguing Sets in Generalized Quadrangles, Hexagons, and Octagons, Kutztown University, Pennsylvania, USA, 2017.
• Erdős-Ko-Rado Sets in Finite Geometries, Rutgers University, New Jersey, USA, 2017.
• Erdős-Ko-Rado Sets in Finite Geometries, University of Regina, Regina, Saskatchewan, 2016.
• Intriguing Sets in Generalized Quadrangles and Hexagons, University of Waterloo, Waterloo, Ontario, 2016.
• The Manickam-Miklós-Singhi Conjecture for Partial Linear Spaces, BLS 2016, Logroño, 2016.
• Intriguing Sets in Generalized Quadrangles and Hexagons, University of Regina, Regina, Saskatchewan, 2016.
• Erdős-Ko-Rado Sets in Finite Spherical Buildings, University of Delaware, Newark, Delaware, 2016.
• Erdős-Ko-Rado Sets in Finite Classical Polar Spaces, University of Western Australia, Perth, 2013.

Contributed Talks

• On Boolean Degree 1 Functions (Cameron-Liebler Sets) in Finite Vector Spaces, Summit 280, Budapest, Hungary, 2024.
• The Twisted E66(q) graph, Summerschool Finite Geometry and Friends, Brussels, Belgium, 2023.
• Affine vector space partitions, Workshop Combinatorics in Digital Communication, Eindhoven University of Technology (TU/e), Netherlands, 2023.
• Conditions on Large Caps, Finite Geometries 6, Irsee, Germany, 2022.
• The Density of Complementary Subspaces, ILAS 2022, Galway, Ireland, 2022.
• The Density of Complementary Subspaces, Prairie Discrete Math Workshop, Online, Canada, 2022.
• Strongly regular graphs satisfying the 4-vertex condition, ECM 2020, Slovenia, 2021.
• Strongly regular graphs satisfying the 4-vertex condition, CanaDAM 2021, Canada, 2021.
• Finite Geometry and switching in graphs, Finite geometry: a workshop in honour of Tim Penttila, Adelaide, Australia, 2019.
• New SDP Bounds on Subspace Codes, Bled19: 9th International Slovenian Conference on Graph Theory, Bled, Slovenia, 2019.
• The Independence Number of the Orthogonality Graph, Summerschool Finite Geometry and Friends, Brussels, Belgium, 2019.
• Regular Intersecting Families, Kolkom 2018, Paderborn, Germany, 2018.
• Three Perspectives on Cameron-Liebler Line Classes, Combinatorics 2018, Arco, Italy, 2018.
• Strongly Regular Graphs Related to Polar Spaces, Finite Geometries, Fifth Irsee Conference, Irsee, 2017.
• The Largest t-Intersecting Erdős-Ko-Rado Sets of Polar Spaces, MCGTC, Malta, 2017.
• A Switching for the Collinearity Graphs of Polar Spaces, Western Sectional Meeting of the AMS, Denver, Colorado, 2016.
• New Bounds on the Ramsey Numbers r(In, L3), Combinatorics 2016, Maratea, 2016.
• The Manickam-Miklós-Singhi Conjecture for Vector Spaces, System of Lines: Applications of Algebraic Combinatorics, Worcester Polytechnic Institute, Worcester, MA, 2015.
• Erdős-Ko-Rado Sets and Semidefinite Programming in Hermitian Polar Spaces, Workshop on Algebraic Combinatorics, Tilburg, 2015.
• Erdős-Ko-Rado Sets and Semidefinite Programming in Hermitian Polar Spaces, CanaDAM, 2015.
• The Manickam-Miklós-Singhi Conjecture for Vector Spaces. Finite Geometries, Fourth Irsee Conference, 2014.
• Erdős-Ko-Rado Sets in Finite Classical Polar Spaces, Fq11, Magdeburg, 2013.
• Erdős-Ko-Rado Sets in Hermitian Polar Spaces, Combinatorics 2012, Perugia, 2012.