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Main articles: "SI, "SI base unit, "SI derived unit, and "SI prefix

Numbers[edit]

See Sect. 3.3 of the Standard text.

Expressions[edit]

T = 25 °C − 3 °C = (25 − 3) °C
P = 100 kW ± 5 kW = (100 ± 5) kW
(but not: 100 ± 5 kW)
d = 12 × (1 ± 10−4) m

Mathematical signs and symbols[edit]

A comprehensive list of internationally standardized mathematical symbols and notations can be found in "ISO 31-11.

See also[edit]

References[edit]

  1. ^ "Resolution 10", 22nd General Conference on Weights and Measures, BIPM .
  2. ^ Brief reference to the history, NIST .

Bibliography[edit]

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