# Definition:Ritz Sequence

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## Definition

Let $\sequence {\phi_n}$ be an infinite sequence of mappings in a normed linear space, where:

- $\phi_n: \R \to \R$

Let this sequence be constrained by the requirements defined in the definition of the Ritz method.

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Then the sequence $\set {\phi_n}$ can be called a **Ritz Sequence**.

## Notes

This is not corroborated by literature, but so far it does not seem to be defined differently.

Therefore, it is introduced for the sake of brevity for future developments.

## Source of Name

This entry was named for Walther Ritz.