# Definition:Ritz Sequence

## 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.

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.