# Notation: Wikis

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# Encyclopedia

The term notation can refer to:

the way something is written

## Written communication

• Symbol, something that stands for, or suggests, something else
• One of first forms of human communication to use symbols was used by cave wall artists in their representations of life outside the cave
• All writing systems use combinations of symbols to represent components of auditory language, speech

### 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 +

# Wiktionary

Up to date as of January 15, 2010
(Redirected to notation article)

## English

Wikipedia has an article on:

Wikipedia

### Noun

 Singular notation Plural countable and uncountable; plural notations

notation (countable and uncountable; plural notations)

1. (uncountable) The act, process, method, or an instance of representing by a system or set of marks, signs, figures, or characters.
2. (uncountable) A system of characters, symbols, or abbreviated expressions used in an art or science or in mathematics or logic to express technical facts or quantities.
3. (countable) A specific note or piece of information written in such a notation.
She made a notation in the margin of the book.

#### Translations

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