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SO

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SO or so may refer to:

Arts and entertainment

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Music

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Other

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Relationships

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Businesses

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Language

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Places

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Science, technology, and mathematics

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Biology

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Computing

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Mathematics

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  • SO (complexity), second-order logic in descriptive complexity
  • Special orthogonal group, a subset of an orthogonal group
    • SO(2), a term used in mathematics, the group of rotations about a fixed point in the Euclidean plane
    • SO(3), a term used in mathematics, the group of rotations about a fixed point in three-dimensional Euclidean space
    • SO(4), a term used in mathematics, the group of rotations about a fixed point in four-dimensional Euclidean space
    • SO(5), a term used in mathematics, the special orthogonal group of degree 5 over the field R of real numbers
    • SO(8), a term used in mathematics, the special orthogonal group acting on eight-dimensional Euclidean space
    • , the corresponding special orthogonal Lie algebra

Physics and chemistry

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Names

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Other uses

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See also

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