共 8 条
[1]
Birman M v(1956)On the theory of self-adjoint extensions of positive definite operators Mat. Sb. N.S. 38 431-450
[2]
Gallone M(2019)Hydrogenoid spectra withcentral perturbations Rep. Math. Phys. 84 215-243
[3]
Michelangeli A(1968)A characterization of the non-local boundary value problems associated with an elliptic operator Ann. Scuola Norm. Sup. Pisa 22 425-513
[4]
Grubb G(1947)The theory of self-adjoint extensions of semi-bounded Hermitian transformations and its applications I Rec. Math. [Mat. Sbornik] N.S. 20 431-495
[5]
Kreĭn MG(2017)On point interactions realised as Ter–Martirosyan–Skornyakov Hamiltonians Rep. Math. Phys. 79 215-260
[6]
Michelangeli A(1952)On general boundary problems for elliptic differential equations Trudy Moskov. Mat. Obšč. 1 187-246
[7]
Ottolini A(undefined)undefined undefined undefined undefined-undefined
[8]
Višik MI(undefined)undefined undefined undefined undefined-undefined