Stephen Tashi

Science Advisor

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## Summary:

- Is the concept of rational functions in one indeterminate useful in algebra?

## Main Question or Discussion Point

The examples of "formal" power series and polynomials in one indeterminate are familiar and useful in algebra. However, I don't recall the example of rational functions (ratios of polynomials) in one indeterminate being used for anything. Is that concept useful? - or trivial? -or equivalent to something that's called by a different name?