Representation of positive semidefinite elements as sum of squares in 2-dimensional local rings
DOI10.1007/s13398-021-01202-4zbMath1487.14125OpenAlexW4206674210MaRDI QIDQ2070479
Publication date: 24 January 2022
Published in: Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1007/s13398-021-01202-4
sums of squaressingularitiesreal spectrumcompletionexcellent henselian ringdimension 2positive semidefinite elements
Sums of squares and representations by other particular quadratic forms (11E25) Fields related with sums of squares (formally real fields, Pythagorean fields, etc.) (12D15) Semialgebraic sets and related spaces (14P10) Formal power series rings (13F25) Excellent rings (13F40) Analytic algebras and generalizations, preparation theorems (32B05) Quadratic forms over local rings and fields (11E08)
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