Langer Heinz

Publications in Math-Net.Ru

1. Generalized coresolvents of $\Pi$-isometric operator with unequal defect numbers
   
   Funktsional. Anal. i Prilozhen., 5:4 (1971),  73–75
2. Defective subspaces and generalized resolvents of an Hermitian operator in the space $\Pi_\varkappa$
   
   Funktsional. Anal. i Prilozhen., 5:3 (1971),  54–69
3. Defect subspaces and generalized resolvents of an Hermitian operator in the space $\Pi_\varkappa$
   
   Funktsional. Anal. i Prilozhen., 5:2 (1971),  59–71
4. On the maximal dual pairs of invariant subspaces of $J$-self-adjoint operators
   
   Mat. Zametki, 7:4 (1970),  443–447
5. Invariant subspaces of linear operators acting in a space with indefinite metric
   
   Dokl. Akad. Nauk SSSR, 169:1 (1966),  12–15
6. On the theory of quadratic pencils of self-adjoint operators
   
   Dokl. Akad. Nauk SSSR, 154:6 (1964),  1258–1261
7. On the spectral function of a self-adjoint operator in a space with indefinite metric
   
   Dokl. Akad. Nauk SSSR, 152:1 (1963),  39–42
8. On $J$-Hermite operators
   
   Dokl. Akad. Nauk SSSR, 134:2 (1960),  263–266