James Francese

@jamesfanshi

Higher geometry, logic, and the foundations of mathematics. Epistemology, action, and theories of truth. He/him/his.

Anaheim, CA
Vrijeme pridruživanja: veljača 2017.

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  1. 29. sij

    Collaborate, don’t cooperate.

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  2. proslijedio/la je Tweet
    10. sij

    Par exemple, prenons une jolie configuration à... 4 corps désormais ! Regardez les premiers tours, c'est joli hein... Ouais continuez à regarder... CA VA MAL FINIR !

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  3. proslijedio/la je Tweet
    4. sij

    Are you interested in learning linear algebra, category theory, group theory, differential geometry, quantum mechanics, or special relativity? I'm currently accepting new students! Check out my site for more info, or just dm me.

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  4. proslijedio/la je Tweet
    19. pro 2019.

    My coauthor and I just have a new paper out on the arxiv: we construct the long exact sequence of homotopy n-groups. It is short and pretty. Enjoy!

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    17. pro 2019.

    Impressive article today showing that a wealth of proposals on formulations of "double field theory" ( i.e. generally T-duality covariant type II supergravity geometry ) all follow...

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  6. proslijedio/la je Tweet

    If you got $1 every second, it would take ~11.5 days to accumulate $1 million. It would take ~31.7 years to accumulate $1 billion. And it would take ω₁ millennia to accumulate $ℵ₁. No one should be an ℵ₁-aire.

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  7. proslijedio/la je Tweet

    Kant actually moved philosophy into its Sellarsian phase, few know this.

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    15. pro 2019.
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  9. proslijedio/la je Tweet
    10. stu 2019.

    Visualizing SL₂ℤ: Identify SL₂ℝ (which is a solid torus) with the complement of a solid torus in ℝ³ plus a point at ∞ for the identity. The elements of SL₂ℤ are the dots, colored by type (hyp/ell/par), sized by 1/norm. SL₂ℤ is discrete, hence the picture is bounded.

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  10. proslijedio/la je Tweet
    10. pro 2019.
    Odgovor korisnicima

    You mean the Thomas Kuhn who earned a BS, MS, and PhD in physics? Weird that he did all that without any background in science!

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  11. proslijedio/la je Tweet
    4. pro 2019.

    David Asperó, Asaf Karagila : Methods in Higher Forcing Axioms (Workshop Notes)

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  12. 4. pro 2019.

    Donate to Wikipedia

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  13. proslijedio/la je Tweet
    30. stu 2019.

    A new section on homotopy pullback and homotopy pushout squares was added, see

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  14. 29. stu 2019.
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  15. 29. stu 2019.

    Working on directed homotopy theory, interested in taking a look at Eric Finster’s notes (apparently from a talk) on Opetopic Type Theory but they seem to have disappeared. Anyone happen to have a copy?

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    Odgovor korisniku/ci

    How do I tag Peter May in Twitter for maximum controversy?

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  17. proslijedio/la je Tweet
    15. stu 2019.
    Odgovor korisniku/ci

    Even people who can't go should read what Olivia Caramello has to say about topos theory. Here's a not-so-technical explanation on her website: and here's something more detailed:

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  18. proslijedio/la je Tweet
    12. stu 2019.

    Remember: it's Sunzi's remainder theorem.

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  19. proslijedio/la je Tweet
    31. lis 2019.

    The Handbook of Homotopy Theory is due out in December! Table of contents: Publisher's page: Curated list of available chapters: (it would be good if people could track down more and add them here!)

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