Dr Alexander Farrugia

Dr Alexander Farrugia

Dr Alexander Farrugia

 B.Sc.(Hons)(Melit.),M.Sc.(Melit.),Ph.D.(Melit.)

Junior College Senior Lecturer I

Room C003
G.F. Abela Junior College
University of Malta
Msida
  +356 2590 7405
Alexander Farrugia is a mathematics lecturer at the University of Malta Junior College and a part-time lecturer at the University of Malta. He read for his undergraduate degree at the University of Malta, a Bachelor of Science in Mathematics and Computer Science, graduating with Honours in 2001. He then followed with an M.Sc. in Mathematics at the same university, successfully graduating with Distinction in 2003. After a 10-year stint at MCAST, where he was Senior Lecturer and Mathematics Subject Coordinator, he started his Ph.D., again at the University of Malta and joined the University of Malta Junior College as a member of staff. He obtained his Ph.D. in 2016, after successfully defending his thesis titled ‘On the Spectra and Walks of Molecular and Controllable Graphs’. His area of expertise includes algebraic and spectral graph theory, with applications in molecular chemistry and control theory.

In his free time, he writes about mathematics on Quora, a website where people share their knowledge with the world. He was recognized as a Top Writer on Quora in 2017 and 2018, with his writings garnering more than 8 million views (as of August 2018).
  • Algebraic Graph Theory
  • Spectral Graph Theory
  • Walks of Graphs
  • Controllable Graphs
  • Graph Energies
  • NSSDs
  • Nuciferous Graphs

Farrugia, A. 2018, "The increase in the resolvent energy of a graph due to the addition of a new edge", Applied Mathematics and Computation, vol. 321, pp. 25-36.

Farrugia, A. 2017, "Coulson-type Integral Formulae for the Energy Changes of Graph Perturbations", MATCH-COMMUNICATIONS IN MATHEMATICAL AND IN COMPUTER CHEMISTRY, vol. 77, no. 3, pp. 575-588.

Farrugia, A. & Sciriha, I. 2017, "Triangles in inverse NSSD graphs", Linear and Multilinear Algebra, , pp. 1-7.

Farrugia, A. 2016, "On strongly asymmetric and controllable primitive graphs", Discrete Applied Mathematics, vol. 211, pp. 58-67.

Farrugia, A., Gauci, J.B. & Sciriha, I. 2016, "Non-Singular graphs with a singular deck", Discrete Applied Mathematics, vol. 202, pp. 50-57.

Gutman, I., Furtula, B., Farrugia, A. & Sciriha, I. 2016, "Constructing NSSD molecular graphs", Croatica Chemica Acta, vol. 89, no. 4, pp. 449-454.

Sciriha, I. & Farrugia, A. 2016, "No chemical graph on more than two vertices is nuciferous", ARS MATHEMATICA CONTEMPORANEA, vol. 11, no. 2, pp. 397-402.

Farrugia, A., Gauci, J.B. & Sciriha, I. 2015, "Complete graphs with zero diagonal inverse", ARS MATHEMATICA CONTEMPORANEA, vol. 11, no. 2, pp. 231-245.

Farrugia, A. & Sciriha, I. 2015, "On the main eigenvalues of universal adjacency matrices and U-controllable graphs", Electronic Journal of Linear Algebra, vol. 30, no. 1, pp. 812-826.

Farrugia, A. & Sciriha, I. 2014, "Controllability of undirected graphs", Linear Algebra and its Applications, vol. 454, pp. 138-157.

Farrugia, A. & Sciriha, I. 2014, "The main eigenvalues and number of walks in self-complementary graphs", Linear and Multilinear Algebra, vol. 62, no. 10, pp. 1346-1360.

Sciriha, I., Farrugia, A. & Gauci, J.B. 2014, "The adjacency matrices of complete and nutful graphs", Match Commun.Math.Comput.Chem, vol. 72, pp. 165-178.

Farrugia, A., Gauci, J.B. & Sciriha, I. 2013, "On the inverse of the adjacency matrix of a graph", Special Matrices, vol. 1, pp. 28-41.

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