@article{250608558, title = {Optimization over Sparse Support-Preserving Sets: Two-Step Projection with Global Optimality Guarantees}, author = {William de Vazelhes and Xiao-Tong Yuan and Bin Gu}, year = {2025}, eprint = {2506.08558}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2506.08558v2}, }