Overcoming degeneracy and singularity: Techniques for semidefinite programs and homotopy continuation endgames
J. Zapata, Overcoming Degeneracy and Singularity: Techniques for Semidefinite Programs and Homotopy Continuation Endgames, Institute of Science and Technology Austria, 2026.

Certifying solutions of degenerate semidefinite programs
V. Kolmogorov, S. Naldi, J. Zapata, SIAM Journal on Optimization 35 (2025) 1630–1654.