Multiple Positive Solutions via Index Theory for Singular Boundary Value Problems with Derivative Dependence

Yan, Baoqiang; O’Regan, Donal; Agarwal, Ravi P.

doi:10.1007/s11117-007-2068-8

Cited by 1 publication

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“…The proof is based on the method of approximation and upper-lower solutions. Yan et al [206] considered the singular second-order differential Equation (138) with boundary conditions y(0) = 0, y (1) = 0, where f may be singular at y = 0 and y = 0. Using fixed point index theory, they proved existence of multiple positive solutions.…”

Section: Remark 22mentioning

confidence: 99%

A Review on a Class of Second Order Nonlinear Singular BVPs

et al. 2020

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Several real-life problems are modeled by nonlinear singular differential equations. In this article, we study a class of nonlinear singular differential equations, explore its various aspects, and provide a detailed literature survey. Nonlinear singular differential equations are not easy to solve and their exact solution does not exist in most cases. Since the exact solution does not exist, it is natural to look for the existence of the analytical solution and numerical solution. In this survey, we focus on both aspects of nonlinear singular boundary value problems (SBVPs) and cover different analytical and numerical techniques which are developed to deal with a class of nonlinear singular differential equations − ( p ( x ) y ′ ( x ) ) ′ = q ( x ) f ( x , y , p y ′ ) for x ∈ ( 0 , b ) , subject to suitable initial and boundary conditions. The monotone iterative technique has also been briefed as it gained a lot of attention during the last two decades and it has been merged with most of the other existing techniques. A list of SBVPs is also provided which will be of great help to researchers working in this area.

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Section: Remark 22mentioning

confidence: 99%