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notation

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**notation**is a system of graphics or symbols, characters and abbreviated expressions, used (for example) in artistic and scientific disciplines to represent technical facts and quantities by convention.BOOK,weblink Dictionary of Linguistics and Phonetics, John Wiley & Sons, Crystal, David, 2011, WEB,weblink Notation, EncyclopÃ¦dia Britannica, Merriam-Webster Dictionary, 6 September 2013, Therefore, a notation is a collection of related symbols that are each given an arbitrary meaning, created to facilitate structured communication within a domain knowledge or field of study.Standard notations refer to general agreements in the way things are written or denoted. The term is generally used in technical and scientific areas of study like mathematics, physics, chemistry and biology, but can also be seen in areas like business, economics and music.

## Written communication

- Phonographic writing systems, by definition, use symbols to represent components of auditory language, i.e. speech, which in turn refers to things or ideas. The two main kinds of phonographic notational system are the alphabet and the syllabary. Some written languages are more consistent in their correlation of written symbols (or graphemes) with sound (or phonemes), and are therefore considered to have better phonemic orthography.
- Ideographic writing, by definition, refers to things or ideas independently of their pronunciation in any language. Some ideographic systems are also pictograms that convey meaning through their pictorial resemblance to a physical object.

### Biology and medicine

- Nucleic acid notation
- Systems Biology Graphical Notation (SBGN)
- Sequence motif pattern-description notations
- Cytogenetic notation
- Energy Systems Language

### Chemistry

- Chemical formulas are a way of expressing information about the atoms that constitute a particular chemical compound, e.g. {{chem|H|2|O}} or {{chem|C|6|H|12|O|6}}

### Computing

- BNF (Backus normal form, or Backusâ€“Naur form) and EBNF (extended Backus-Naur form) are the two main notation techniques for context-free grammars.
- Hungarian notation is an identifier naming convention in computer programming, that represents the type or intended use of a variable with a specific pattern within its name.
- Mathematical markup languages are computer notations for representing mathematical formulae.
- Various notations have been developed to specify regular expressions.

### Logic

A variety of symbols are used to express logical ideas; see the List of logic symbols### Management

- Time and motion study symbols such as therbligs

### Mathematics

- Mathematical notation is used to represent various kinds of mathematical 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 Zermeloâ€“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
- Numeral systems, notation for writing numbers, including
- Arabic numerals
- Roman numerals
- 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...

### Physics

- Braâ€“ket notation, or Dirac notation, is an alternative representation of probability distributions in quantum mechanics.
- Tensor index notation is used when formulating physics (particularly continuum mechanics, electromagnetism, relativistic quantum mechanics and field theory, and general relativity) in the language of tensors.

### Typographical conventions

- Infix notation, the common arithmetic and logical formula notation, such as "
*a*+*b*âˆ’*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*+".

### Sports and games

- Baseball scorekeeping, to represent a game of baseball.
- Juggling notation, to represent juggling patterns.
- Aresti Catalogue, to represent aerobatic manoeuvres

## Graphical notations

### Music

- Musical notation permits a composer to express musical ideas in a musical composition, which can be read and interpreted during performance by a trained musician; there are many different ways to do this (hundreds have been proposed), although staff notation provides by far the most widely used system of modern musical symbols.

### Dance and movement

- Benesh Movement Notation permits a graphical representation of human bodily movements
- Laban Movement Analysis or Labanotation permits a graphical representation of human bodily movements
- Eshkol-Wachman Movement Notation permits a graphical representation of bodily movements of other species in addition to humans, and indeed any kind of movement (e.g. aircraft aerobatics)
- Aresti aerobatic symbols provides a way to represent flight maneuvers in aerobatics

### Science

- Feynman diagrams permit a graphical representation of a perturbative contribution to the transition amplitude or correlation function of a quantum mechanical or statistical field theory
- Structural formulas are graphical representations of molecules
- Venn diagrams shows logical relations between a finite collection of sets.
- Drakon-charts are a graphical representation of algorithms and procedural knowledge.

### Other systems

- Chess notation, to represent moves in a game of chess
- Whyte notation for classifying steam locomotives by wheel arrangement

## See also

## References

{{Reflist}}## Further reading

- BOOK,weblink Handbook of Semiotics, Indiana University Press, NÃ¶th, Winfried, Winfried NÃ¶th, 1995, 9780253209597,
- BOOK,weblink Writing and Its Use, Volumen 2, Walter de Gruyter, Hartmut GÃ¼nther, Otto Ludwig, 1996, 1559, 9783110147445,

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