| 11. | In 10 dimensions, the case relevant for superstring theory, there are 10 constraints
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| 12. | Prior to Witten's announcement, string theorists had identified five versions of superstring theory.
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| 13. | Multiple, seemingly disparate superstring theories were unified on a backbone, M-theory.
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| 14. | Bosonic string theory was eventually superseded by theories called superstring theories.
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| 15. | He suggests that it might be an alternative to superstring theory.
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| 16. | The different versions of superstring theory were unified, as long hoped, by new equivalences.
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| 17. | At 38, he is the rising star of superstring theory.
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| 18. | At low energies, the superstring theories are approximated by supergravity in ten spacetime dimensions.
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| 19. | Wikipedia has articles about almost any subject ranging from Santa Claus to Superstring theory.
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| 20. | Beyond the Standard Model, some force particles and so, strictly speaking, became superstring theory.
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