List of references
E. Artin: Über die Zerlegung definiter Funktionen in Quadrate. Abhdl. math. Sem. Hamburg. Univ.5, 100–115 (1927).
A. Robinson: On ordered fields and definite functions. Math. Ann.130, 257–271 (1955).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Robinson, A. Further remarks on ordered fields and definite functions. Math. Ann. 130, 405–409 (1956). https://doi.org/10.1007/BF01343235
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01343235