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- W2033704471 abstract "Studying inequalities between subgraph- or homomorphism-densities is an important topic in graph theory. Sums of squares techniques have proven useful in dealing with such questions. Using an approach from real algebraic geometry, we strengthen a Positivstellensatz for simple quantum graphs by Lov'asz and Szegedy, and we prove several new Positivstellensatze for nonnegativity of quantum multigraphs. We provide new examples and counterexamples." @default.
- W2033704471 created "2016-06-24" @default.
- W2033704471 creator A5010043767 @default.
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- W2033704471 date "2013-10-25" @default.
- W2033704471 modified "2023-09-23" @default.
- W2033704471 title "Positivstellensatze for Quantum Multigraphs" @default.
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- W2033704471 hasPublicationYear "2013" @default.
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