Stufe (algebra)
id:
stufe-algebra-322-13590274
title:
Stufe (algebra)
text:
In field theory, a branch of mathematics, the Stufe (/ʃtuːfə/; German: level) s(F) of a field F is the least number of squares that sum to −1. If −1 cannot be written as a sum of squares, s(F) = ∞ . In this case, F is a formally real field. Albrecht Pfister proved that the Stufe, if finite, is always a power of 2, and that conversely every power of 2 occurs.
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wiki
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encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Stufe_(algebra)
date created:
date modified:
2024-03-16T05:37:30Z
main entity:
{"identifier":"Q1538648","url":"https://www.wikidata.org/entity/Q1538648"}
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13
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13