Blar i forfatter Doktorgradsavhandlinger (NT-fak) "Debus, Sebastian"
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Combinatorics of Reflection Groups and Real Algebraic Geometry
Debus, Sebastian (Doctoral thesis; Doktorgradsavhandling, 2022-11-18)Real algebraic geometry studies sets defined by a finite system of real polynomial equalities and inequalities. A central topic in this area is the study of the cone of nonnegative polynomials. Verifying that a given polynomial is nonnegative is an NP-hard problem. However, it turns out to be algorithmically much more feasible to verify if a given polynomial admits a representation into a sum of ...