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Publication:3029074
zbMath0626.10017MaRDI QIDQ3029074
Publication date: 1987
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
surveysums of squarescompositionrings of continuous functionsBorsuk-UlamPythagoras numberstopological spaces with involutionreal fieldsHurwitz-Radon theoremlevel of fieldslevels and Pythagoras numbers of commutative rings
Quadratic forms over general fields (11E04) Fields related with sums of squares (formally real fields, Pythagorean fields, etc.) (12D15) Ordered fields (12J15) General binary quadratic forms (11E16) General commutative ring theory (13A99)
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