A generalized solution of the boundary value problem for $y^{\prime\prime}=f(x,\,y,\,y^{\prime})$.
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[1] M. Peixoto. Generalized convex functions and second order differential inequalities , 1949 .
[2] JOHN W. Green. Approximately convex functions , 1952 .
[3] E. Beckenbach,et al. On generalized convex functions , 1945 .