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- From: tilo@bernina.ethz.ch (Tilo Levante)
- Subject: Eigenvalues and vectors of an infinite matrix
- Message-ID: <1992Aug13.120225.12996@bernina.ethz.ch>
- Organization: Swiss Federal Institute of Technology (ETH), Zurich, CH
- Date: Thu, 13 Aug 1992 12:02:25 GMT
- Lines: 21
-
- I have the following matrix and need an algorithm to compute
- the eigenvalues and eigenvectors:
-
- ... ... ... ...
- ..... H + 2I A* B* 0 ....
- ..... A H + I A* B* ....
- ..... B A H A* ....
- ..... 0 B A H - I ....
- ... ... ... ...
-
- H is a hermitian nxn matrix
- A,B are nxn matrices, A*, B* are the adjoint matrices
- I is the nxn unity matrix, 0 is the zero matrix
-
- I know that there are n eigenvalues l1 to ln and that the
- other eigenvalues are of the form li + k for any integer k.
-
- Thanks for any hints
-
- Tilo Levante
-
-