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Niranjan Kumar

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Preprint Jul 2026

The Ruskai-Audenaert conjecture&equipartitions of positive operators

Several open problems in quantum information theory can be formulated as equipartition problems for positive operators, asking for a decomposition into bounded-rank positive parts under uniform constraints. The existence problems for SIC-POVMs and MUBs are of this type, as is the Ruskai-Audenaert conjecture. We first s...

Niranjan Kumar, Michael M. Wolf · 0 citations

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