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Natural Science, Mathematics, 2025
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NEUMANN PROBLEM FOR FOURTH ORDER DEGENERATE ORDINARY DIFFERENTIAL EQUATIONS

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Submitted: 2025-02-27; Published: 2025-02-27
CC BY-NC 4.0 This work is licensed under Creative Commons Attribution–NonCommercial International License (CC BY-NC 4.0).

Abstract

In the present paper the Neumann problem for the equationĀ Lu≔(tαuα)″+au+f,Ā whereĀ 0≤α≤4,Ā t∈[0,b],Ā f∈L2(0,b)Ā , is considered. Firstly, the weighted Sobolev spaceĀ Wα2Ā and generalized solution for the abovementioned equation are defined. Then, the existence and uniqueness of the generalized solution is studied, as well as the spectrum and the domain of corresponding operator are described.