Sopra l'equazione (1) \(\varDelta u=c(x,y)\cdot u(x,y)\); \(c\geqq 0\).

zbMATH Open56.0422.04MaRDI QIDQ1831084

Marcel Brelot

Publication date: 1930

Published in: Atti della Accademia Nazionale dei Lincei, Rendiconti, VI. Serie (Search for Journal in Brave)

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