Publication: An elementary based sufficient condition for sums of 2mth powers of polynomials over non-archimedean real closed fields
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Elsevier Science B.V. (North-Holland)
Using some model-theoretic arguments applied to the theory of real valuations, we obtain a sufficient condition based on elementary properties of , K any real closed field, for ƒ to be sum of 2mth powers of rational functions in K(x).