Positive solutions to boundary value problems of p-Laplacian with fractional derivative

Abstract

In this article, we consider the following boundary value problem of nonlinear fractional differential equation with p-Laplacian operator: $$\begin{aligned}& D^{\alpha}\bigl(\phi_{p}\bigl(D^{\alpha}u(t) \bigr)\bigr)= f\bigl(t, u(t)\bigr), \quad0< t< 1, \\& u(0)= u(1)= D^{\alpha}u(0)= D^{\alpha}u(1)=0, \end{aligned}$$ where $1<\alpha\leq2$ is a real number, $D^{\alpha}$ is the conformable fractional derivative, $\phi_{p}(s)=\vert s\vert ^{p-2}s$ , $p>1$ , $\phi_{p}^{-1}=\phi_{q}$ , $1/p+1/q=1$ , and $f:[0, 1]\times[0,+\infty)\to[0,+\infty)$ is continuous. One of the difficulties here is that the corresponding Green’s function $G(t, s)$ is singular at $s= 0$ . By the use of an approximation method and fixed point theorems on cone, some existence and multiplicity results of positive solutions are acquired. Some examples are presented to illustrate the main results.