Gabriel Peyré

@gabrielpeyre

CNRS researcher at the DMA, École Normale Supérieure. One tweet a day on computational mathematics.

Paris
Vrijeme pridruživanja: ožujak 2015.

Tweetovi

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  1. Prikvačeni tweet
    4. pro 2017.

    Computational Optimal Transport: the book. All you ever wanted to know about OT: theoretical insights, algorithms and applications!

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  2. proslijedio/la je Tweet
    prije 5 sati

    Enthusiastically opening Postdoc and PhD positions at in collaboration with on single-cell multi-omics integration. Looking forward to your application!

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  3. prije 11 sati

    The first Prairie Colloquium will take place next Wednesday 12:00 ! Jean François Cardoso will speak about « Information geometry of Independent Component Analysis ».

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  4. prije 13 sati

    Oldies but goldies: G. H. Golub, Christian Reinsch, Singular value decomposition and least squares solutions, 1970. The most popular algorithm to compute efficiently the SVD decomposition.

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  5. 2. velj

    Fixed points can be attractive or repulsive depending on the derivative of the map.

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  6. proslijedio/la je Tweet
    1. velj

    35 years ago today, Richard Feynman's paper "Quantum Mechanical Computers" was published in 𝘖𝘱𝘵𝘪𝘤𝘴 𝘕𝘦𝘸𝘴. I think he'd be surprised and gratified to see everything that his original idea has led to.

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  7. proslijedio/la je Tweet
    1. velj

    "So I have decided to stop attempting to generate new mathematics, and concentrate instead on carefully checking “known” mathematics on a computer."

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  8. 1. velj

    Oldies but goldies: S Varadhan, On the behavior of the fundamental solution of the heat equation with variable coefficients, 1967. Shows that the heat kernel on a manifold is approximately a geodesic Gaussian kernel for small time.

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  9. proslijedio/la je Tweet
    31. sij

    Interested in the mathematics and numerics of granular media? Together with colleagues from Imperial College and Purdue, we've written a new review, 20 years after the one of ! Go check it out:

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  10. 31. sij

    Parametric density fitting is a parameter estimation problem aiming at registering a template distribution to samples.

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  11. proslijedio/la je Tweet
    30. sij
    Odgovor korisniku/ci
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  12. 30. sij

    Oldies but goldies: Naum Z. Shor, Utilization of the operation of space dilatation in the minimization of convex functions, 1972. Introduces the ellipsoid method, which was later shown to provide polynomial time algorithm for linear programming.

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  13. proslijedio/la je Tweet
    29. sij

    Since I was tweeting images of Mandelbrot set yesterday and my interest in the subject was renewed, let me show this and explain what it's about (⤵️). •1/11

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  14. proslijedio/la je Tweet
    29. sij
    Odgovor korisniku/ci

    A while ago, I wrote a 1-page description of the Harris-Stephens corner detection: Independent of rotation or shift and of affine change of intensity

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  15. proslijedio/la je Tweet
    29. sij
    Odgovor korisnicima

    I guess, this goes back to Fenchel's lecture notes from 1951. I wrote a mathoverflow answer some time ago:

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  16. 29. sij

    Harris’s methods is the most frequently used corner detector, based on the eigenvalues of the structure tensor.

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  17. 28. sij

    Same live with colors.

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  18. proslijedio/la je Tweet
    28. sij

    ABC in Grenoble ⛷️, March 19-20: please spread the word by sharing this poster! pdf at: workshop site:

    , , i još njih 2
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  19. 28. sij

    Oldies but goldies: MacAdam, Visual sensitivities to color differences in daylight, 1942. Showed that color perception can be modelled using an anisotropic metric.

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  20. proslijedio/la je Tweet
    27. sij

    The Mandelbrot set approximated by the 4096 first Fourier coefficients of its boundary (it would be nice to superimpose over a classical view but I don't know how to get Sage to align its coordinates exactly):

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  21. 27. sij
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