A parametrix construction for time-fractional partial differential equations

Sandro Coriasco; Giovanni Girardi; Stevan Pilipović

A parametrix construction for time-fractional partial differential equations

Analysis of PDEs 2026-07-30 v1

Authors: Sandro Coriasco , Giovanni Girardi , Stevan Pilipović

Abstract

We prove in detail how to construct the parametrix of a parameter-dependent family of pseudodifferential operators, appearing in the analysis of time-fractional partial differential equations. In particular, we perform a precise study of the dependence from the parameter of the corresponding asymptotic expansion terms, as well as of the smoothing remainders. Moreover, we provide some results about the Laplace transform of vector-valued distributions, also appearing in the analysis of time-fractional partial differential equations.

Cite

@article{arxiv.2607.28028,
  title  = {A parametrix construction for time-fractional partial differential equations},
  author = {Sandro Coriasco and Giovanni Girardi and Stevan Pilipović},
  journal= {arXiv preprint arXiv:2607.28028},
  year   = {2026}
}

Comments

18 pages. Materials originally included in the first version of arXiv:2511.04885