Partial Differential Equations

Existence of the principal eigenvalue for cooperative elliptic systems in a general domain

I. Birindelli^a, E. Mitidieri^b, G. Sweers<sup>c

a</sup> La Sapienza University, Italy
^b University of Trieste, Italy
^c Delft University of Technology, Netherlands

UDC: 517.956.227

Received: 25.09.1998

 English version: Differential Equations, 1999, 35:3, 326–334

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