Regular

In ordinary English, regular is an adjective or noun used to mean in accordance with the usual customs, conventions, or rules, or frequent, periodic, or symmetric.

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The term regular also refers to:

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• In the military, a regular unit is a military unit that is part of the regular forces (not militia or reserve). For example, the US 101st Airborne Division is a regular unit, while the 1st US Army (Reserve) is not. See Regular Army for usage in the U.S. Army.

Mathematical meanings include:

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• In geometry, a geometric figure is regular if it is symmetric. See regular polygon or regular polyhedron.
• In linear algebra, a regular matrix is an invertible matrix.
• In graph theory, a regular graph is a graph such that the all the degrees of the vertices are equal.
• In computer science, particularly formal language theory, a language is regular if it can be represented by a regular expression.
• In topology, a regular space is one in which points are closed and any point can be separated from any closed set by open sets.
• In algebraic geometry, a function is regular on a variety if for every point there exists an open neighborhood so that the function restricts to a rational function whose denominator does not vanish in that neighborhood.
• In information theory, data with regularity has less entropy than its representation suggests. For example, English prose is quite regular because most random sequences of alphabetic and punctuative characters are not valid English prose.

Regular related Images and Photos (experimental)

Regular Expressions Shirt	Cartoon Network: Regular Show - The Slack Pack	New York a regular place to live	Super Mario Bros. Wii Regular Pack Applique
Enlist in the Regular Army Division	Devilman Hell Gate Regular Version Polystone Statue	NFL Cincinnati Bengals Best Games of 2009 Regular Season	NFL New Orleans Saints Best Games of 2009 Regular Season
The Prefabricated Mulberry Harbour Enables Allied Troops to Pour into France as in a Regular Port	NFL Super Bowl XLIV Champions: New Orleans Saints/NFL New Orleans Saints Best Games of 2009 Regular