Concepedia

Selfadjoint ΠK of symmetric subspaces: An abstract approach to boundary problems with spectral parameter in the boundary conditions

Aad Dijksma, Heinz Langer, H. S. V. de Snoo

Integral Equations and Operator Theory · 1984 · 32 citations · 13 references

DOI

Concepts

References

13

On generalized resolvents and<i>Q</i>-functions of symmetric linear relations (subspaces) in Hilbert space

Heinz Langer, Björn Textorius · Pacific Journal of Mathematics · 1977 · 196 citations · Full text

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Extension theory of formally normal and symmetric subspaces

Earl A. Coddington · Memoirs of the American Mathematical Society · 1973 · 193 citations

, , +13

Self-adjoint extensions of symmetric subspaces

Aad Dijksma, Hendrik de Snoo · Pacific Journal of Mathematics · 1974 · 151 citations · Full text

, , +11

Singular eigenvalue problems with eigenvalue parameter contained in the boundary conditions

Charles T. Fulton · Proceedings of the Royal Society of Edinburgh Section A Mathematics · 1980 · 121 citations

, , +12

Mathematical Research

The Mathematical Intelligencer · 1981 · 104 citations