Advances in Pure Mathematics
Vol.3 No.7A(2013), Paper ID 38480, 4 pages
DOI:10.4236/apm.2013.37A001
On the Generalization of Hilbert’s 17th Problem and Pythagorean Fields
Yuji Shimizuike
3-9-7 Fukawa, Asakita-ku, Hiroshima, 739-1751, Japan
Copyright © 2013 Yuji Shimizuike et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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