# form+of+expression

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**Analytical expression**— In mathematics, an analytical expression (or expression in analytical form) is a mathematical expression, constructed using well known operations that lend themselves readily to calculation. As for closed form expressions, the criteria are not… …62

**Of the form**— In mathematics, the phrase of the form indicates that a mathematical object, or (more frequently) a collection of objects, follows a certain pattern of expression. It is frequently used to reduce the formality of mathematical proofs. Example of… …63

**Facial expression**— Photographs from the 1862 book Mécanisme de la Physionomie Humaine by Guillaume Duchenne. Through electric stimulation, Duchenne determined which muscles were responsible for different facial expressions. Charles Darwin would later republish some …64

**M-expression**— In computer programming, M expressions (or meta expressions) were intended to be the expressions used to write functions in the Lisp programming language. Data to be manipulated using M expressions was to be written using S expressions. M… …65

**Gene expression programming**— (GEP) is an evolutionary algorithm that evolves populations of computer programs in order to solve a user defined problem. GEP has similarities, but is distinct to, the evolutionary computational method of Genetic Programming. In Genetic… …66

**To reduce an expression**— Reduce Re*duce (r[ e]*d[=u]s ), v. t. [imp. & p. p. {Reduced} ( d[=u]st ),; p. pr. & vb. n. {Reducing} ( d[=u] s[i^]ng).] [L. reducere, reductum; pref. red . re , re + ducere to lead. See {Duke}, and cf. {Redoubt}, n.] 1. To bring or lead back to …67

**Closed form**— may refer to: Maths Closed form expression, a finitary expression Closed differential form, a differential form α with the property that dα = 0 Poetry In poetry analysis, a type of poetry that exhibits regular structure, such as meter or a… …68

**Idea-expression divide**— The idea expression divide or idea expression dichotomy is a concept which explains the appropriate function of copyright laws, which are generally designed to protect the fixed expression or manifestation of an idea rather than the fundamental… …69

**Idea–expression divide**— Intellectual property law Primary rights Copyright · authors rights  …70

**Polynomial expression**— In mathematics, and in particular in the field of algebra, a polynomial expression in one or more given entities E 1, E 2, ..., is any meaningful expression constructed from copies of those entities together with (usually numeric) constants,… …