Positive self-adjoint operators generated by products of differential expressions |
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| Authors: | Guangsheng Wei Jianhua Wu |
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| Affiliation: | a Research Center for Applied Mathematics and Institute for Information and System Science, Xi'an Jiaotong University, Xi'an 710049, PR China
b Department of Mathematics, Shaan'xi Normal University, Xi'an 710062, PR China |
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| Abstract: | Under the assumption of the product τ:=l+l of the regular differential expression l and its adjoint l+, being well-formed, a complete characterization of all the positive self-adjoint extensions of the minimal operator generated by τ in terms of boundary conditions is given. |
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| Keywords: | Positive self-adjoint operator Product of differential expression Boundary condition |
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