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Stahl's Theorem (aka BMV Conjecture): Insights and Intuition on its Proof

Mathematical Physics 2017-02-27 v2 math.MP Spectral Theory

Abstract

The Bessis-Moussa-Villani conjecture states that the trace of exp(AtB)\exp(A-tB) is, as a function of the real variable tt, the Laplace transform of a positive measure, where AA and BB are respectively a hermitian and positive semi-definite matrix. The long standing conjecture was recently proved by Stahl and streamlined by Eremenko. We report on a more concise yet self-contained version of the proof.

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Cite

@article{arxiv.1702.06403,
  title  = {Stahl's Theorem (aka BMV Conjecture): Insights and Intuition on its Proof},
  author = {Fabien Clivaz},
  journal= {arXiv preprint arXiv:1702.06403},
  year   = {2017}
}

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Conference paper