scientific article; zbMATH DE number 3589308
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Publication:4157626
zbMath0378.50012MaRDI QIDQ4157626
Publication date: 1977
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fields related with sums of squares (formally real fields, Pythagorean fields, etc.) (12D15) Incidence structures embeddable into projective geometries (51A45)
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