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  2. Dimension - Wikipedia

    en.wikipedia.org/wiki/Dimension

    Minkowski space first approximates the universe without gravity; the pseudo-Riemannian manifolds of general relativity describe spacetime with matter and gravity. 10 dimensions are used to describe superstring theory (6D hyperspace + 4D), 11 dimensions can describe supergravity and M-theory (7D hyperspace + 4D), and the state-space of quantum ...

  3. Superstring theory - Wikipedia

    en.wikipedia.org/wiki/Superstring_theory

    Some physicists (e.g., John Baez et al.) have speculated that the exceptional Lie groups E 6, E 7 and E 8 having maximum orthogonal subgroups SO(10), SO(12) and SO(16) may be related to theories in 10, 12 and 16 dimensions; 10 dimensions corresponding to string theory and the 12 and 16 dimensional theories being yet undiscovered but would be ...

  4. Supergravity - Wikipedia

    en.wikipedia.org/wiki/Supergravity

    The core breakthrough for the 10-dimensional theory, known as the first superstring revolution, was a demonstration by Michael B. Green, John H. Schwarz and David Gross that there are only three supergravity models in 10 dimensions which have gauge symmetries and in which all of the gauge and gravitational anomalies cancel.

  5. 10-simplex - Wikipedia

    en.wikipedia.org/wiki/10-simplex

    Its dihedral angle is cos −1 (1/10), or approximately 84.26°. It can also be called a hendecaxennon , or hendeca-10-tope , as an 11- facetted polytope in 10-dimensions. The name hendecaxennon is derived from hendeca for 11 facets in Greek and -xenn (variation of ennea for nine), having 9-dimensional facets, and -on .

  6. 10-demicube - Wikipedia

    en.wikipedia.org/wiki/10-demicube

    In geometry, a 10-demicube or demidekeract is a uniform 10-polytope, constructed from the 10-cube with alternated vertices removed. It is part of a dimensionally infinite family of uniform polytopes called demihypercubes. E. L. Elte identified it in 1912 as a semiregular polytope, labeling it as HM 10 for a ten-dimensional half measure polytope.

  7. Introduction to M-theory - Wikipedia

    en.wikipedia.org/wiki/Introduction_to_M-theory

    These dimensions are usually made to take the shape of mathematical objects called Calabi–Yau manifolds. Five major string theories were developed and found to be mathematically consistent with the principle of all matter being made of strings. Having five different versions of string theory was seen as a puzzle.

  8. List of physical quantities - Wikipedia

    en.wikipedia.org/wiki/List_of_physical_quantities

    Inertial force that appears to act on all objects when viewed in a rotating frame of reference: N⋅rad = kg⋅m⋅rad⋅s −2: L M T −2: bivector Crackle: c →: Change of jounce per unit time: the fifth time derivative of position m/s 5: L T −5: vector Current density: J →: Electric current per unit cross-section area A/m 2: L −2 I ...

  9. List of two-dimensional geometric shapes - Wikipedia

    en.wikipedia.org/wiki/List_of_two-dimensional...

    For mathematical objects in more dimensions, see list of mathematical shapes. For a broader scope, see list of shapes. Generally composed of straight line segments