Non‐linear boundary value problems on the semi‐infinite interval: an upper and lower solution approach
Ravi P. Agarwal, Donal O’Regan · Mathematika · 2002
Existence criteria are presented for non-linear boundary value problems on the half line. In particular, the theory includes a problem in the theory of colloids and a problem arising in the unsteady flow of a gas through a semi-infinite porous medium.