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Why M-theory has exactly 10+1 dimensions? Some combinatorics with tensor indices will do.

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  • $\begingroup$ Possible duplicates: physics.stackexchange.com/q/10126/2451 and links therein. $\endgroup$
    – Qmechanic ♦
    Commented Sep 15, 2022 at 18:52
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    $\begingroup$ See also here. $\endgroup$
    – J.G.
    Commented Sep 15, 2022 at 18:56
  • $\begingroup$ @Qmechanic I can see no detailed reference to my OQ in your links. $\endgroup$
    – user1642683
    Commented Sep 15, 2022 at 19:00
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    $\begingroup$ The dimensions required in bosonic string theory ($26$), supersymmetric string theory ($10$) and M-theory ($11$) do not admit explanations rooted in "combinatorics with tensor indices". If on the other hand you asked why M-theory has exactly one more dimension than supersymmetric string theory, and didn't constrain how we're expected to answer, that... would probably be a duplicate anyway. But it'd be a question much better suited to this site. $\endgroup$
    – J.G.
    Commented Sep 15, 2022 at 19:05

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