Citation: | Yuhua Long, Qinqin Zhang. SIGN-CHANGING SOLUTIONS OF A DISCRETE FOURTH-ORDER LIDSTONE PROBLEM WITH THREE PARAMETERS[J]. Journal of Applied Analysis & Computation, 2022, 12(3): 1118-1140. doi: 10.11948/20220148 |
By combining the method of the invariant sets of descending flow with variational technique, we give a series of criteria in terms of different values of $ \lambda $ to ensure that a discrete fourth-order Lidstone problem with three parameters possesses at least four solutions. It is further shown that these four solutions consist of one sign-changing solution, one positive solution, one negative solution and one trivial solution. Finally, three examples are also provided to illustrate our theoretical results.
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