A minimax formula for principal eigenvalues and application to an antimaximum principle

Godoy, T.; Gossez, J.-P.; Paczka, S.
September 2004
Calculus of Variations & Partial Differential Equations;Sep2004, Vol. 21 Issue 1, p85
Academic Journal
A minimax formula for the principal eigenvalue of a nonselfadjoint elliptic problem was established in [17]. In this paper we extend this formula to the case where an indefinite weight is present. An application is given to the study of the uniformity of the antimaximum principle.


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