Abstract AuthorsCostică Mustăţa “Tiberiu Popoviciu” Institute of Numerical Analysis, Romanian Academy, Romania Keywords? Paper coordinatesC. Mustăţa, On the extension of…
Abstract An upper and lower solution theory is presented for the Dirichlet boundary value problem y^{\prime\prime}+f(t,y,y^{\prime})=0, 0<t <1 with y(0)=y(1)=0.…