By using Krasnoselskii's fixed point theorem, we study the existence of at least one or two positive solutions to a system of fractional boundary value problems given by −D 0+ν1 y 1(t) = λ 1 a 1(t)f(y 1(t), y 2(t)), − D 0+ν2 y 2(t) = λ 2 a 2(t)g(y1(t), y2(t)), where D0+ν is the standard Riemann-Liouville fractional derivative, ν1, ν2 ∈ (n − 1, n] for n > 3 and n ∈ N, subject to the boundary conditions y1(i)(0) = 0 = y2(i)(0), for 0 ≤ i ≤ n − 2, and [D0+αy1(t)]t=1 = 0 = [D0+αy2(t)]t=1, for 1 ≤ α ≤ n − 2, or y1(i)(0) = 0 = y2(i)(0), for 0 ≤ i ≤ n − 2, and [D0+αy1(t)]t=1 = ϕ1(y1), [D0+αy2(t)]t=1 = ϕ2(y2), for 1 ≤ α ≤ n − 2, ϕ1, ϕ2 ∈ C([0,1], R). Our results are new and complement previously known results. As an application, we also give an example to demonstrate our result.
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机译:通过使用克拉斯诺塞尔斯基定点定理,我们研究了由-D 0 + sup> ν1 sup> y 1给出的分数阶边值问题系统的至少一个或两个正解的存在(t)=λ1 a 1(t)f(y 1(t),y 2(t)),-D 0 + sup> ν2 sup> y 2(t) = λ em> 2 a em> 2( t em>) g em>( y em>1( t em>), y em>2( t em>)),其中 D em>0 + sup>ν em> sup>是标准的黎曼-利维尔分数导数ν em>1,ν em> n em 3和 n em>的 2 sub>∈( n em>-1, n em>] ∈ N em>,但要遵守边界条件 y em> 1 sub>( i em>) sup>(0)= 0 = y em> 2 sub>( i em>) sup>(0),对于0≤ i em>≤ n em>-2和[ D em> 0 + sup> sub>α em> sup> y em> 1 sub>( t em>)] t em> = 1 sub> = 0 = [ D em> 0 + sup> sub>α em> sup> y em> 2 sub>( t em>)] t em> = 1 sub>,对于1≤α em>≤< em> n em>-2,或 y em> 1 sub>( i em>) sup>(0)= 0 = y em> 2 sub>( i em>) sup>(0),对于0≤ i em>≤ n em>-2和[ D em> 0 + sup> sub>α em> sup> y em> 1 sub>( t em>)] t em> = 1 sub> = ϕ em> 1 sub>( y em> 1 sub>),[ D em> 0 + sup> sub>α em> sup> y em> 2 sub>( t em>)] t em> = 1 sub> = ϕ em> 2 sub>( y em> 2 sub>),对于1≤α em>≤ n em>-2, ϕ em> 1 sub>, ϕ em> 2 sub>∈ C em>([0,1], R em>)。我们的结果是新的,并且补充了以前已知的结果。作为应用程序,我们还提供了一个示例来演示我们的结果。
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