2014: 9th International Colloquium on Graph Theory and Combinatorics, Grenoble, France.
Presented talk: The Adjacency Matrices of Complete and Nutful Graphs
2015: 8th Slovenian Conference on Graph Theory, Kranjska Gora, Slovenia.
Presented talk: Non-Singular Bipartite Graphs With A Singular Deck
2017: The Second Malta Conference in Graph Theory and Combinatorics, Malta.
Presented talk: Edge Construction of Molecular NSSDs
2018: Workshop on Graph Spectra, Combinatorics and Optimization, Aveiro, Portugal.
Presented talk: The Resolvent Energy Matrix of a Graph
2019: 9th Slovenian Conference on Graph Theory, Bled, Slovenia.
Presented talk: Generating Pairs of Generalized Cospectral Graphs from Controllable Graphs
2020: International Conference on Graph Connections (online), Kottayam, Kerala, India.
(invited speaker)
Presented talk: Molecular Conductivity: Nonsingular Graphs With a Singular Deck
Watch the talk here.
April 2021: Spectral Graph Theory Online – informal research event by Brazilian researchers
(invited talk)
Presented talk: Walks and Eigenvectors
Watch the talk here.
June 2021: 8th European Congress of Mathematics – Portorož, Slovenia (online)
Presented talk: The Rank of Pseudo Walk Matrices
Alexander Farrugia 