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- Natalia Borovykh, Driss Drissi, Marc Nico Spijker
- Appl. Math. Lett.
- 2002

In this note, we formulate a theorem giving bounds on the powers of linear operators, in a general Banach space setting. The relevance of the theorem is illustrated by applying it to the Crank-Nicholson method for the numerical solution of the heat equation. This application yields a stability estimate in the maximum norm which amounts to an improvement… (More)

- Rajendra Bhatia, Driss Drissi
- SIAM J. Matrix Analysis Applications
- 2005

We establish the positive definiteness of some functions and of some matrices that arise as solutions of generalized Lyapunov equations.

- Driss Drissi
- SIAM J. Matrix Analysis Applications
- 2006

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