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  2. Special linear Lie algebra - Wikipedia

    en.wikipedia.org/wiki/Special_linear_Lie_algebra

    The Lie algebra is central to the study of special relativity, general relativity and supersymmetry: its fundamental representation is the so-called spinor representation, while its adjoint representation generates the Lorentz group SO(3,1) of special relativity.

  3. Special linear group - Wikipedia

    en.wikipedia.org/wiki/Special_linear_group

    In mathematics, the special linear group SL(n, R) of degree n over a commutative ring R is the set of n × n matrices with determinant 1, with the group operations of ordinary matrix multiplication and matrix inversion. This is the normal subgroup of the general linear group given by the kernel of the determinant

  4. Gravitational constant - Wikipedia

    en.wikipedia.org/wiki/Gravitational_constant

    The gravitational constant appears in the Einstein field equations of general relativity, [4] [5] + =, where G μν is the Einstein tensor (not the gravitational constant despite the use of G), Λ is the cosmological constant, g μν is the metric tensor, T μν is the stress–energy tensor, and κ is the Einstein gravitational constant, a ...

  5. List of Latin abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_Latin_abbreviations

    Example: "New Age s.l. has a strong American flavor influenced by Californian counterculture." sine loco "without place of publication" Commonly used in bibliography. s.s. sensu stricto "in the strict sense" Example: "New Age s.s. refers to a spectrum of alternative communities in Europe and the United States in the 1970s." SOS si opus sit

  6. List of mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_mnemonics

    Stellar classification sequence: O B A F G K M R N S; Oh Be A Fine Girl/Guy, Kiss Me Right Now, Sweetheart! [2] Revised stellar classification sequence: O B A F G K M L T Y; Old, Bald, And Fat Generals Kiss More Ladies Than You [3] Signs of the zodiac: [4]

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  8. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    The [U.S.] National Extra Fine series of pre-1949 corresponds today to the Unified National Extra Fine (UNEF) of the Unified Thread Standard. NF: National Fine: The [U.S.] National Fine series of pre-1949 corresponds today to the Unified National Fine (UNF) of the Unified Thread Standard. NL or N/L: notes list

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