On degenerate boundary value problems for elliptic differential operators of second order in the plane and the index of degenerate pseudo-differential operators on a closed curve

Abstract

Mathematische NachrichtenVolume 102, Issue 1 p. 277-292 Article On degenerate boundary value problems for elliptic differential operators of second order in the plane and the index of degenerate pseudo-differential operators on a closed curve Johannes Elschner, Johannes Elschner Institut für Mathematik, der Akademie der Wissenschaften der DDR, DDR - 1080 Berlin, Mohrenstraße 39Search for more papers by this author Johannes Elschner, Johannes Elschner Institut für Mathematik, der Akademie der Wissenschaften der DDR, DDR - 1080 Berlin, Mohrenstraße 39Search for more papers by this author First published: 1981 https://doi.org/10.1002/mana.19811020123Citations: 3AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume102, Issue11981Pages 277-292 RelatedInformation