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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
Author(s) -
Elschner Johannes
Publication year - 1981
Publication title -
mathematische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 50
eISSN - 1522-2616
pISSN - 0025-584X
DOI - 10.1002/mana.19811020123
Subject(s) - order (exchange) , mathematics , differential operator , degenerate energy levels , value (mathematics) , index (typography) , pure mathematics , algebra over a field , computer science , physics , quantum mechanics , statistics , world wide web , finance , economics