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live-simons-blog.pantheonsite.io | ||
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mycqstate.wordpress.com
Last Spring I took part in the Simons Institute's semester on Quantum Hamiltonian Complexity. The semester was a great success, with an excellent batch of long-term participants and many fruitful interactions. The Institute asked me to write a short "Research Vignette" presenting, to a broad audience, an example scientific outcome of the programme. You can... |
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djalil.chafai.net
This post is devoted to few convex and compact sets of matrices that I like. The set \( {\mathcal{C}_n} \) of correlation matrices. A real \( {n\times n} \) matrix \( {C} \) is a correlation matrix when \( {C} \) is symmetric, semidefinite positive, with unit diagonal. This means that \[ C_{ii}=1, \quad C_{ji}=C_{ji},\quad \left\geq0 \] for every \(... |
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quantumfrontiers.com
Summer is a great time for academics. Imagine: three full months off! Hit the beach. Tune that golf pitch. Hike the sierras. Go on a cruise. Watch soccer with the brazilenos (there's been better years for that one). Catch the sunset by the Sydney opera house. Take a nap. Think that's outrageous? We have it... |
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gregorygundersen.com
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