Interpolation of data by smooth nonnegative functions

Charles Fefferman, Arie Israel, Garving K. Luli

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


We prove a finiteness principle for interpolation of data by nonnegative Cm and Cm-1,1functions. Our result raises the hope that one can start to understand constrained interpolation problems in which, e.g., the interpolating function F is required to be nonnegative.

Original languageEnglish (US)
Pages (from-to)305-324
Number of pages20
JournalRevista Matematica Iberoamericana
Issue number1
StatePublished - 2017

All Science Journal Classification (ASJC) codes

  • General Mathematics


  • Constrained interpolation
  • Nonnegative interpolation
  • Whitney extension problem


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