LabAGTA

Selected Research Articles

1. M. Ahmadnasab and P.J. Psarrakos:
   Homotopic deviation theory for regular matrix pencils.
   Linear and Multilinear Algebra 72, 2024, 1470-1496. [pdf]
2. D. Kodokostas and S. Lambropoulou:
   Knot invariants for rail knotoids.
   Journal of Knot Theory and its Ramifications 32, 2023, no. 6. [pdf]
3. Ch. Chorianopoulos and P. Psarrakos:
   On the shell and the shell-extremal eigenvalues of a square matrix.
   Linear Algebra and its Applications 665, 2023, 354-381. [pdf]
4. J.C. Baez, K. Courser and C. Vasilakopoulou:
   Structured versus Decorated Cospans.
   Compositionality 4, 2022, 1-39. [pdf]
5. G. Katsouleas, V. Panagakou and P. Psarrakos:
   A note on the boundary of the Birkhoff-James epsilon-orthogonality sets.
   Electronic Journal of Linear Algebra 38, 2022, 32-48. [pdf]
6. M. Buckley, T. Fieremans, C. Vasilakopoulou and J. Vercruysse:
   Oplax Hopf algebras.
   Higher Structures 5, 2021, 71-120. [pdf]
7. M. Manouras, S. Lambropoulou and L.H. Kauffman:
   Finite type invariants for knotoids.
   European Journal of Combinatorics 98, 2021, article 103402 (38 pages). [pdf]
8. G. Bakirtzis, C.H. Fleming and C. Vasilakopoulou:
   Categorical semantics of cyber-physical systems theory.
   ACM Transactions on Cyber-Physical Systems 5, 2021, article 32 (32 pages). [pdf]
9. M. Chlouveraki, D. Goundaroulis, A. Kontogeorgis and S. Lambropoulou:
   A generalized skein relation for Khovanov homology and a categorification of the theta-invariant.
   Proceedings of the Royal Society of Edinburgh 115, 2021, 1731-1757. [pdf]
10. M. Buckley, T. Fieremans, C. Vasilakopoulou and J. Vercruysse:
    A Larson-Sweedler theorem for Hopf V-categories.
    Advances in Mathematics 376, 2021, article 107456 (64 pages). [pdf]
11. N. Gugumcu and S. Lambropoulou:
    Braidoids.
    Israel Journal of Mathematics 242, 2021, 955-995. [pdf]
12. V. Panagakou, P. Psarrakos and N. Yannakakis:
    A Birkhoff-James cosine function for normed linear spaces.
    Aequationes Mathematicae 95, 2021, 889-914. [pdf]
13. G. Katsouleas, V. Panagakou and P. Psarrakos:
    Eigenvalue estimates via pseudospectra.
    Mathematics 9, 2021, article 1729 (18 pages). [pdf]