Positive Solutions for Degenerate and Nondegenerate Elliptic Systems: Existence and Numerical Approximations

This article is concerned with positive solutions for degenerate and nondegenerate elliptic systems of the form Δ Ψ ( w 1 ) + f 1 ( x , w 1 , w 2 ) = 0   i n   D ,   1 = 1 , 2 https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003072584/300cbf75-7783-4a6f-9796-7cd4d736d320/content/eq1399.tif"/>