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restriction

 
Dictionary: re·stric·tion   (rĭ-strĭk'shən) pronunciation
n.
    1. The act of restricting.
    2. The state of being restricted.
  1. Something that restricts; a regulation or limitation.

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Business Dictionary: Restriction
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In general: any limitation.

Real estate: limitation placed upon the use of property, for example, as contained in the deed or other written Instrument in the chain of title or in local ordinances pertaining to land use.

Real Estate Dictionary: Restriction
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A limitation placed upon the use of property, contained in the Deed or other written Instrument in the Chain of Title or in local Ordinances pertaining to land use. See Encumbrance.
Examples: The ownership of property is subject to several restrictions. A deed Covenant may restrict development alternatives, as may a local Zoning Ordinance. Easements may restrict use of parts of the property. Liens may restrict sales. Building codes may restrict construction practices.

Thesaurus: restriction
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Antonyms: restriction
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n

Definition: limit
Antonyms: enlargement, expansion, freedom, release


Hacker Slang: restriction
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A bug or design error that limits a program's capabilities, and which is sufficiently egregious that nobody can quite work up enough nerve to describe it as a feature. Often used (esp. by marketroid types) to make it sound as though some crippling bogosity had been intended by the designers all along, or was forced upon them by arcane technical constraints of a nature no mere user could possibly comprehend (these claims are almost invariably false).

Old-time hacker Joseph M. Newcomer advises that whenever choosing a quantifiable but arbitrary restriction, you should make it either a power of 2 or a power of 2 minus 1. If you impose a limit of 107 items in a list, everyone will know it is a random number — on the other hand, a limit of 15 or 16 suggests some deep reason (involving 0- or 1-based indexing in binary) and you will get less flamage for it. Limits which are round numbers in base 10 are always especially suspect.


Architecture: restriction
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On land, an encumbrance limiting its use; usually imposed for community or mutual protection.


Dream Symbol: Restriction
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Any form of restriction in a dream often mirrors some frustration in the dreamer's personal or business life. The dreamer may be imposing restrictions on himself or herself as well as on others.


Wikipedia: Restriction (mathematics)
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In mathematics, the notion of restriction finds a general definition in the context of sheaves.

Often, the following definition will be sufficient:

If f : EF is a (partial) function from E to F, and A is a subset of E, then the restriction of f to A is the (partial) function

 {f|}_A : A \to F having the graph G({f|}_A) = \{ (x,y)\in G(f) \mid x\in A \}.

(In rough words, it is "the same function", but only defined on A\cap D(f).)

More generally, the restriction of a binary relation is usually defined in the same way. (One could also define a restriction to a subset of E x F, and the same applies to n-ary relations. These cases do not fit into the scheme of sheaves.)

Examples

  1. The restriction of the non-injective function  f: \mathbb R\to\mathbb R; x\mapsto x^2 to  \mathbb R_+=[0,\infty) is the injection  f: \mathbb R_+\to\mathbb R; x\mapsto x^2.
  2. The canonical injection of a set A into a superset E of A.

Shopping: restriction
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Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Business Dictionary. Dictionary of Business Terms. Copyright © 2000 by Barron's Educational Series, Inc. All rights reserved.  Read more
Real Estate Dictionary. Dictionary of Real Estate Terms. Copyright © 2004 by Barron's Educational Series, Inc. All rights reserved.  Read more
Thesaurus. Roget's II: The New Thesaurus, Third Edition by the Editors of the American Heritage® Dictionary Copyright © 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.  Read more
Answers Corporation Antonyms. © 1999-2009 by Answers Corporation. All rights reserved.  Read more
Hacker Slang. The Jargon File. Copyright © 2007.  Read more
Architecture. McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Dream Symbol. The Dreams Encyclopedia. 1995 ©Visible Ink Press. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Restriction (mathematics)" Read more