A subsolution-supersolution method for quasilinear systems
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Assuming that a system of quasilinear equations of gradient type admits a strict supersolution and a strict subsolution, we show that it also admits a positive solution.
CitationKandilakis, D. A., & Magiropoulos, M. (2005). A subsolution-supersolution method for quasilinear systems. Electronic Journal of Differential Equations, 2005(97), pp. 1-5.
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