A sharp Schrödinger maximal estimate in R2

Xiumin Du, Larry Guth, Xiaochun Li

Research output: Contribution to journalArticlepeer-review


We show that limt→0 eitΔf(x) = f(x) almost everywhere for all f ∈ Hs(R2) provided that s > 1/3. This result is sharp up to the endpoint. The proof uses polynomial partitioning and decoupling.

Original languageEnglish (US)
Pages (from-to)607-640
Number of pages34
JournalAnnals of Mathematics
Issue number2
StatePublished - 2017


  • Decoupling
  • Polynomial partitioning
  • Restriction
  • Schrodinger equation
  • Schrodinger maximal function

ASJC Scopus subject areas

  • Statistics and Probability
  • Statistics, Probability and Uncertainty


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