Approximate Pythagoras numbers on *-algebras over C ?

Abbasi, P; Gribling, S; Klingler, A; Netzer, T

Netzer, T (通讯作者),Univ Innsbruck, Dept Math, Innsbruck, Austria.

JOURNAL OF COMPLEXITY, 2023; 74 ():

Abstract

The Pythagoras number of a sum of squares is the shortest length among its sums of squares representations. In many algebras, for example real polynom......

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