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**series sum**

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**AnkeBerg****Member**- Registered: 2020-09-18
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Hi all!

The problem is to estimate the Euclidean norm of the series

| SUM {k from 0 to infty} (I - A)^k A w_k |

where matrix A such that 0 <= A <= I

and vectors w_k such that | w_k | <= 1

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**series sum**