Papers

Published/Accepted

• 1. J. Jeong and D. Sossa. Commutation principles for nonsmooth variational problems on Euclidean Jordan algebras, SIAM Journal on Optimization, 35, 1551-1569, 2025 [arxiv] [paper] 

  2. A. Seeger and D. Sossa. Pareto singular values of Boolean matrices and analysis of bipartite graphs. Linear Algebra and its Applications, 709, 164 - 188, 2025.  [paper] 

  3. W. de Oliveira, V. Sessa and D. Sossa. Computing critical angles between two convex cones. J. Optim. Theory Appl., 2024 [arxiv] [paper] 

  4. D. Sossa and V. Trevisan. Graphs sharing an arbitrary number of ordered complementarity eigenvalues. Discrete Mathematics, 347(3), 2024. [paper] 

  5. A. Seeger and D. Sossa. Singular value analysis of linear maps under conic constraints. Set-Valued and Variational Analysis, 2023

  6. A. Seeger and D. Sossa. Infinite families of connected graphs with equal spectral radius. Australasian Journal of Combinatorics, 87, 258 - 276, 2023. [ paper ]

  7. A. Seeger and D. Sossa. Singular value problems under nonnegativity constraints. Positivity, 46, 2023. doi.org/10.1007/s11117-023-01000-9

  8. D. Sossa. A Fiedler-type determinantal inequality in Euclidean Jordan algebras. Linear Algebra and its Applications, 667, 151-164, 2023.

  9. A. Seeger and D. Sossa. Cone-constrained singular value problems. Journal of Convex Analysis, 30, 1285-1306, 2023.

  10. A. Seeger and D. Sossa. Complementarity eigenvalues as tools for determining connected graphs. Australasian Journal of Combinatorics, 84, 220--237, 2022. [ paper ] 

  11. A. Seeger and D. Sossa. Spectral radii of friendship graphs and their connected induced subgraphs. Linear and Multilinear Algebra, 2021. https://doi.org/10.1080/03081087.2021.2017836

  12. A. Seeger and D. Sossa. Vertex-removal, vertex-addition and different notions of similarity for vertices of a graph. Linear and Multilinear Algebra, 2021. doi.org/10.1080/03081087.2021.1908943

  13. A. Seeger and D. Sossa. Measuring Similarity Between Connected Graphs: The Role of Induced Subgraphs and Complementarity Eigenvalues. Graphs and Combinatorics, 37, 493 - 525, 2021. doi.org/10.1007/s00373-020-02260-y

  14. A. Seeger and D. Sossa. On cardinality of complementarity spectra of connected graphs. Linear Algebra and its Applications, 614, 5 -23, 2021. doi.org/10.1016/j.laa.2019.11.012

  15. A. Seeger and D. Sossa. Extremal Problems Involving the Two Largest Complementarity Eigenvalues of a Graph. Graphs and Combinatorics, 36, 1--25, 2020. doi.org/10.1007/s00373-019-02112-4

  16. M. S. Gowda and D. Sossa. Weakly homogeneous variational inequalities and solvability of nonlinear equations over cones. Math. Programming, 177, 149 - 171, 2019. doi.org/10.1007/s10107-018-1263-7

  17. H. Ramírez and D. Sossa. On the central paths in symmetric cone programming. J. Optim. Theory Appl. 172, 649 - 668, 2017. doi:10.1007s10957-016-0989-8 

  18. A. Seeger and D. Sossa. Critical angles between two convex cones II. Special cases. TOP, 24, 66--87, 2016. doi:10.1007/s11750-015-0382-z 

  19. A. Seeger and D. Sossa. Critical angles between two convex cones I. General theory. TOP, 24, 44--65, 2016. doi:10.1007/s11750-015-0375-y

  20. A. Seeger and D. Sossa. Complementarity problems with respect to Loewnerian cones. J. Global Optim. 62, 299–318, 2015. doi:10.1007/s10898-014-0230-y

  21. H. Ramírez, A. Seeger and D. Sossa. Commutation principle for variational problems on Euclidean Jordan algebras. SIAM J. Optim. 23, 687–694, 2013. doi: 10.1137/120879397 

Submitted

• 22. M. S. Gowda and D. Sossa. Some commutation principles for optimization problems over transformation groups and semi-FTvN systems, 2025 [arxiv]

  23. G. Barbarino, N. Gillis and D. Sossa. Computing cone-constrained singular values of matrices, 2025 [arxiv]

  24. P. Massey, N. Rios and D. Sossa. Commutation principles for optimization problems involving strictly Schur-convex functions in Euclidean Jordan algebras, 2025 [arxiv]