A survey of dimension-free entrywise positivity preservers with links to metric embeddings, Schur polynomials, finite fields, and an appendix on sphere packings via Schoenberg's theorem.
Sur les fonctions absolument monotones.Acta Math., 52(1):1–66, 1929
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The entrywise calculus and dimension-free positivity preservers, with an Appendix on sphere packings
A survey of dimension-free entrywise positivity preservers with links to metric embeddings, Schur polynomials, finite fields, and an appendix on sphere packings via Schoenberg's theorem.