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djalil.chafai.net
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| | | | | In this short post, we recall the pleasant notion of Fréchet mean (or Karcher mean) of a probability measure on a metric space, a concept already considered in an old previous post. Let \( {(E,d)} \) be a metric space, such as a graph (with vertices and edges) or a Riemannian manifold, equipped with its Borel \( {\sigma} \)-field. Let... | |
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djalil.chafai.net
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| | | | | Since January and for the next four years, I serve as the scientific director of the French network of mathematical libraries (RNBM : réseau national des bibliothèques de mathématiques). My principal collaborator for this mission is Elisabeth Kneller from CNRS, the librarian at the head of the network. My predecessor is Frédéric Hélein. The RNBM has several projects. In particular,... | |
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djalil.chafai.net
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| | | | | Charles E. Porter was one of the first to use computers to study the eigenvalues and eigenvectors of random matrices. Here is a PDF file of his article entitled Random Matrix Diagonalization - Some Numerical Computations, published in Journal of Mathematical Physics 4, 1039 (1963). Here is also the PDF file of the detailed programs, written in collaboration with K.... | |
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craftofcoding.wordpress.com
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