Abstract
The existence of multiple positive solutions is presented for the singular second-order boundary value problems
using the fixed point index, where f may be singular at x = 0 and x′ = 0.
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The project is supported by the fund of natural science of Shandong Province.
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Yan, B., O’Regan, D. & Agarwal, R.P. Multiple Positive Solutions via Index Theory for Singular Boundary Value Problems with Derivative Dependence. Positivity 11, 687–720 (2007). https://doi.org/10.1007/s11117-007-2068-8
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DOI: https://doi.org/10.1007/s11117-007-2068-8