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nLab > Latest Changes: 24 branes transverse to K3

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  1.  
    • CommentRowNumber1.
    • CommentAuthorUrs
    • CommentTimeFeb 7th 2021
    • (edited Feb 7th 2021)

    collecting some references on the argument for

    • exactly 24 D7-branes in F-theory on K3

    • exactly 24 NS5-branes in HET-theory on K3

    (this used to be a remark at F-theory, now copied over and expanded here)

    and taking the liberty of adding a comment relating this, via “Hypothesis H”, to the third stable homotopy group of spheres seen under Pontryagin’s theorem.

    v1, current

    • CommentRowNumber2.
    • CommentAuthorDavidRoberts
    • CommentTimeFeb 8th 2021

    Aha, I wondered what the next target for Hypothesis H would be, given the recent edits around Pontryagin–Thom related stuff. I await “SS21” with curiosity.

    • CommentRowNumber3.
    • CommentAuthorBlake Stacey
    • CommentTimeOct 10th 2021

    create link

    diff, v3, current

1 to 3 of 3

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