DOI

In this survey we describe the history and current state of one of the key areas in the qualitative theory of elliptic partial differential equations related to the strong maximum principle and the boundary point principle (normal derivative lemma). Bibliography: 234 titles.

Original languageEnglish
Pages (from-to)189-249
Number of pages61
JournalRussian Mathematical Surveys
Volume77
Issue number2
DOIs
StatePublished - 1 Apr 2022

    Scopus subject areas

  • Mathematics(all)

    Research areas

  • Aleksandrov-Bakelman maximum principle, Harnack inequality, Hopf- Oleinik lemma, normal derivative lemma, strong maximum principle

ID: 98089738