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Deflated and augmented Krylov space methods for linear systems

Speaker: 
Giuseppe Pitton
Institution: 
SISSA
Schedule: 
Friday, May 6, 2016 - 14:00
Location: 
A-133
Abstract: 

 In this talk I will give an overview of Krylov space methods for constructing a sequence of approximate solutions to a given linear system, ideally converging to the exact solution in a finite number of steps. Then I will discuss how finite precision computations differ from the ideal case, and present some strategies used in practice to achieve a good approximation with a reasonable computational effort.

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