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| Format: | Preprint |
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2026
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| Online Access: | https://arxiv.org/abs/2604.11450 |
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| _version_ | 1866910125168525312 |
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| author | Bello-Cruz, Yunier |
| author_facet | Bello-Cruz, Yunier |
| contents | The centralized circumcentered-reflection method (\cCRM) of~\cite{Behling:2024} converges superlinearly to a solution of $\operatorname{find}\;z\in X\cap Y$ when $\inte(X\cap Y)\neq\emptyset$ and the boundaries of $X$ and $Y$ are $\mathcal{C}^1$ hypersurfaces in $\re^n$. Both conditions fail when $\aff(X)=\aff(Y)\subsetneq\re^n$, as in equality-constrained feasibility and spectral matrix problems. We prove that \cCRM\ converges superlinearly when $\aff(X)=\aff(Y)$, $\operatorname{ri}(X)\cap\operatorname{ri}(Y)\neq\emptyset$, and the relative boundaries are $\mathcal{C}^1$ of appropriate relative dimension; and Q-quadratically when the relative boundaries are $\mathcal{C}^2$, with explicit asymptotic constant expressed in terms of the boundary curvatures at the limit point and the local error-bound constant. The case $\aff(X)\neq\aff(Y)$ is identified as open. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_11450 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Q-quadratic convergence of the centralized circumcentered-reflection method under a relative interior condition Bello-Cruz, Yunier Optimization and Control The centralized circumcentered-reflection method (\cCRM) of~\cite{Behling:2024} converges superlinearly to a solution of $\operatorname{find}\;z\in X\cap Y$ when $\inte(X\cap Y)\neq\emptyset$ and the boundaries of $X$ and $Y$ are $\mathcal{C}^1$ hypersurfaces in $\re^n$. Both conditions fail when $\aff(X)=\aff(Y)\subsetneq\re^n$, as in equality-constrained feasibility and spectral matrix problems. We prove that \cCRM\ converges superlinearly when $\aff(X)=\aff(Y)$, $\operatorname{ri}(X)\cap\operatorname{ri}(Y)\neq\emptyset$, and the relative boundaries are $\mathcal{C}^1$ of appropriate relative dimension; and Q-quadratically when the relative boundaries are $\mathcal{C}^2$, with explicit asymptotic constant expressed in terms of the boundary curvatures at the limit point and the local error-bound constant. The case $\aff(X)\neq\aff(Y)$ is identified as open. |
| title | Q-quadratic convergence of the centralized circumcentered-reflection method under a relative interior condition |
| topic | Optimization and Control |
| url | https://arxiv.org/abs/2604.11450 |