Matrix Representations for Positive Noncommutative Polynomials
نویسندگان
چکیده
منابع مشابه
Matrix Representations for Positive Noncommutative Polynomials
In real semialgebraic geometry it is common to represent a polynomial q which is positive on a region R as a weighted sum of squares. Serious obstructions arise when q is not strictly positive on the region R. Here we are concerned with noncommutative polynomials and obtaining a representation for them which is valid even when strict positivity fails. Specifically, we treat a ”symmetric” polyno...
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ژورنال
عنوان ژورنال: Positivity
سال: 2006
ISSN: 1385-1292,1572-9281
DOI: 10.1007/s11117-005-0013-2