Positive solutions to superlinear singul
โ
Ravi P. Agarwal; Donal O'Regan
๐
Article
๐
1998
๐
Elsevier Science
๐
English
โ 746 KB
New existence results are presented for the second-order equation y" + f(t, y) = 0, 0 < t < 1 with Dirichlet or mixed boundary data. In our theory the nonlinearity f is allowed to change sign.