Strong singularities in mixed boundary value problems
Irena Rachůnková (2006)
Mathematica Bohemica
Similarity:
We study singular boundary value problems with mixed boundary conditions of the form where We assume that satisfies the Carathéodory conditions on and need not be integrable on Here can have time singularities at and/or and a space singularity at . Moreover, can change its sign. Provided is nonnegative it can have even a space singularity at We present conditions for the existence of solutions positive on ...