English

The Mercer-Young Theorem for Matrix-Valued Kernels on Separable Metric Spaces

Functional Analysis 2025-10-09 v2 Optimization and Control

Abstract

We generalize the characterization theorem going back to Mercer and Young, which states that a symmetric and continuous kernel is positive definite if and only if it is integrally positive definite, to matrix-valued kernels on separable metric spaces. We also demonstrate the applications of the generalized theorem to the field of convex optimization and other areas.

Keywords

Cite

@article{arxiv.2403.18368,
  title  = {The Mercer-Young Theorem for Matrix-Valued Kernels on Separable Metric Spaces},
  author = {Eyal Neuman and Sturmius Tuschmann},
  journal= {arXiv preprint arXiv:2403.18368},
  year   = {2025}
}

Comments

17 pages, 2 figures

R2 v1 2026-06-28T15:35:13.760Z