⟨ ⟩

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U+27E8, ⟨
MATHEMATICAL LEFT ANGLE BRACKET

Miscellaneous Mathematical Symbols-A

U+27E9, ⟩
MATHEMATICAL RIGHT ANGLE BRACKET

Miscellaneous Mathematical Symbols-A
See also: ‹ ›, bra-ket, ⟪ ⟫, 〈 〉, and

Translingual

Symbol

⟨ ⟩ (English symbol name angle brackets)

  1. (mathematics) Encloses the inner product of two vectors.
  2. (mathematics) Denotes the expectation value of something.

Punctuation mark

⟨ ⟩

  1. (linguistics) Encloses orthographic transcription.
    Coordinate terms: / /, [ ], ⫽ ⫽, | |, ‖ ‖, { }, ! !, \ \, ⸢ ⸣
  2. (papyrology, epigraphy) Encloses restored writing that was mistakenly omitted by the original scribe.

Usage notes

  • For these uses, the characters U+27E8 MATHEMATICAL LEFT ANGLE BRACKET and U+27E9 MATHEMATICAL RIGHT ANGLE BRACKET should be used.
  • The characters U+2329 LEFT-POINTING ANGLE BRACKET and U+232A RIGHT-POINTING ANGLE BRACKET are "deprecated and are strongly discouraged for mathematical use because of their canonical equivalence to CJK punctuation" U+3008 LEFT ANGLE BRACKET and U+3009 RIGHT ANGLE BRACKET .[1]

Alternative forms

References

  1. ^ The Unicode Standard, Version 15.1 (pdf), 2023 September 12, Miscellaneous Technical Range: 2300–23FF