Publications
Christina Michailidou, Vasiliki Panagakou and Panayiotis Psarrakos. Gershgorin type inclusion-exclusion sets for
matrix polynomials, Linear Algebra Appl. (2025), https://doi.org/10.1016/j.laa.2025.10.012
Georgios Katsouleas, Vasiliki Panagakou and Panayiotis Psarrakos. A note on the boundary of the Birkhoff-James epsilon-orthogonality sets. Electronic Journal of Linear Algebra, v. 38 (2022), pp. 32-48.
Georgios Katsouleas, Vasiliki Panagakou and Panayiotis Psarrakos. Eigenvalue Estimates via Pseudospectra. Mathematics 9. 1729. 10.3390/math9151729. (2021)
Vasiliki Panagakou, Panayiotis Psarrakos and Nikos Yannakakis. A Birkhoff-James cosine function for normed linear spaces. Aequationes Mathematicae, v. 95 (2021), pp. 889-914.
Vasiliki Panagakou, Panayiotis Psarrakos and Nikos Yannakakis. Birkhoff-James epsilon-orthogonality sets of vectors and vector-valued
polynomials. Journal of Mathematical Analysis and Applications, v. 454 (2017), pp. 59-78.