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https://doi.org/10.1155/2014/578672
Copy DOIJournal: Abstract and Applied Analysis | Publication Date: Jan 1, 2014 |
Citations: 12 | License type: CC BY 3.0 |
We consider the fourth-order difference equation:Δ(z(k+1)Δ3u(k-1))=w(k)f(k,u(k)), k∈{1,2,…,n-1}subject to the boundary conditions:u(0)=u(n+2)=∑i=1n+1g(i)u(i),aΔ2u(0)-bz(2)Δ3u(0)=∑i=3n+1h(i)Δ2u(i-2),aΔ2u(n)-bz(n+1)Δ3u(n-1)=∑i=3n+1h(i)Δ2u(i-2), wherea,b>0andΔu(k)=u(k+1)-u(k)fork∈{0,1,…,n-1}, f:{0,1,…,n}×[0,+∞)→[0,+∞)is continuous.h(i)is nonnegativei∈{2,3,…,n+2};g(i)is nonnegative fori∈{0,1,…,n}. Using fixed point theorem of cone expansion and compression of norm type and Hölder’s inequality, various existence, multiplicity, and nonexistence results of positive solutions for above problem are derived, which extends and improves some known recent results.
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