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The term notation can refer to:

Chemistry

• Chemical formula
• Lewis structure, denotes chemical bonds

Dance

• Dance notation
  • Labanotation
  • Benesh movement notation

Written Communication

• Symbol, something that stands for, or suggests, something else

Mathematics

• Mathematical notation is used to represent ideas.
  • All types of notation in probability
  • Cartesian coordinate system, for representing position and other spatial concepts in analytic geometry
  • Notation for differentiation, common representations of the derivative in calculus
  • Big O notation, used for example in analysis to represent less significant elements of an expression, to indicate that they will be neglected
  • Z notation, a formal notation for specifying objects using Zermelo-Fraenkel set theory and first-order predicate logic
  • Ordinal notation
  • Set-builder notation, a formal notation for defining sets in set theory
• Systems to represent very large numbers
  • Conway chained arrow notation
  • Knuth's up-arrow notation
  • Steinhaus–Moser notation

Physics

• Bra-ket notation or Dirac Notation is another representation of probability in quantum mechanics
• Tensor notation is a general way to represent a gravitational field in general relativity

Typographical conventions

• Infix notation, the common arithmetic and logical formula notation, such as a+b-c
• Polish notation or "prefix notation", which places the operator before the operands (arguments), such as + a b
• Reverse Polish notation or "postfix notation", which places the operator after the operands, such as a b +
• Numeral systems, notation for writing numbers, including
  • Scientific notation for expressing large and small numbers
  • Sign-value notation, using signs or symbols to represent numbers
  • Positional notation also known as place-value notation, in which each position is related to the next by a multiplier which is called the base of that numeral system
    • Binary notation, a positional notation in base two
    • Octal notation, a positional notation in base eight, used in some computers
    • Decimal notation, a positional notation in base ten
    • Hexadecimal notation, a positional notation in base sixteen, commonly used in computers
    • Sexagesimal notation, an ancient numeral system in base sixty
• See also Table of mathematical symbols - for general tokens and their definitions

Other systems

• Chess notation, to represent moves in a game of chess
• Musical notation, to represent music in a musical composition
• New Epoch Art Notation, to represent the creation of a visual image using any physical media
• Aresti aerobatic symbols, to represent flight maneuvers in aerobatics
• Hungarian notation, to represent the type or intended use of a variable within its name in computer programming

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