Order
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'''Order''' may refer to:
==Honors==
*[[Order (decoration)]], medal or award
==Religious, chivalric and fraternal==
*[[Chivalric order]], established since the 14th century
*[[Fraternal order]]
*[[Holy Orders]], the rite or sacrament in which clergy are ordained
*[[Military order]], established in the crusades
*[[Monasticism|Monastic order]], established since circa 300 AD
*[[Religious order]]
*[[Order (organization)]], an organization of people united by a common fraternal bond or social aim
*[[Tariqa]] or Sufi Order
*A [[Cardassian]] military unit in the fictional Star Trek universe
*An [[Mishnah|Order of the Mishnah]], the name given to a sub-division of the Mishnah, a major religious text
==Legal, political and military==
*[[Court order]], made by a judge; a '''restraining order''', for example, is a type of injunction
*Direct order
*[[Executive order]], issued by the executive branch of government
*[[General order]], a published directive from a commander
*[[Law and order (politics)]]
*[[Social order]], referring to the conduct of society
*[[Standing order]], a general order of indefinite duration, and similar ongoing rules in a parliament
*[[World order]], including the concept of a world government
==In economics and commerce==
*[[Money order]]
*[[Order (business)]], an instruction from a customer to buy
*[[Order (exchange)]], customer's instruction to a stock broker
*Order of degrees in the [[Elliott wave principle]]
==In science==
*[[Order (biology)]], a rank between class and family, or a taxon at that rank
*[[Order of reaction]], a concept of chemical kinetics
*[[Order (crystal lattice)]] an arrangement of composition, spin, magnetism, etc. in a crystal lattice.
*[[Model of hierarchical complexity|Order of hierarchical complexity]], the ordinal complexity of tasks that are addressed
*[[Social order]], a concept used in sociology, history and other social sciences
*[[Topological order]], an organized quantum state
*An [[order parameter]] in physics has value 1 for complete order and value 0 for complete disorder
*The contrary of [[chaos]], disorder (in the sense of randomness), or [[entropy]]
*A way of categorizing the size of lighthouse [[Fresnel lens]]es
==In mathematics==
===Order in arithmetic, analysis and combinatorics===
*[[Orders of approximation]] in Big O notation
*[[Orders of magnitude]], a class of scale or magnitude of any amount
*[[Order of convergence]], a measurement of convergence
*Order, or [[Degree of a polynomial|degree of a polynomial]]
*Order, or [[Matrix (mathematics)#Terminology and notation|dimension of a matrix]]
*[[Order (differential equation)#Types of differential equations|Order]], or order of highest derivative, of a differential equation
*Order in the [[Josephus permutation]]
*[[Weak order of permutations]]
*[[Twelvefold way#Ordered selections and partitions|Ordered selections and partitions]] of the twelvefold way in combinatorics
*Ordered set, a [[permutation]], [[bijection]] or [[cyclic order]]
*Unordered [[subset]] or combination
*Ordered list, a [[tuple]] or [[sequence]]
*Long-range aperiodic order, in for instance [[pinwheel tiling]]
*[[Multiplicative order]] in modular arithmetic
*[[Z-order (curve)]], a space-filling curve
===Order in fractals===
*[[Complexor]], or complex order in fractals
*Orders of construction in the [[Pythagoras tree]]
*Order of extension in [[Lakes of Wada]]
*Order of [[Fractal dimension|Rényi dimensions]]
===Order in graphs===
*Graph order, the number of nodes in a [[Graph (mathematics)|graph]] [http://mathworld.wolfram.com/GraphOrder.html]
*[[Ordered pair]], including undirected and directed graphs
*Ordered [[Tuple|triple]], or mixed graph
**[[Glossary of graph theory]]
===Order in mathematical theories===
*[[Order (group theory)]], the cardinality of a group or period of an element
*[[Order (number theory)]]
**[[Multiplicative partition]], unordered factorization of numbers
*Order in [[Ramsey theory]], uniform structures in consequence to critical set cardinality
*[[Order (ring theory)]], an algebraic structure
*[[Order theory]], which studies various binary relations known as orders
**[[Dense order]] of rational and real numbers
**[[Order topology]], a topology of [[Total order]] for totally ordered sets
**[[Partially ordered set]], or poset
**[[Total order]], a generalization of the complete ordered field of real numbers
***[[Glossary of order theory]]
***[[List of order topics|List of order theory topics]]
*[[Set theory (music)]] encompasses ordered pitch and pitch classes (Musical set theory)
*Type theory encompasses: [[First-order logic]], [[Second-order logic]] and [[Higher-order logic]]
==In computer science==
*Order is a description of complexity or scalability in [[computational complexity theory]] and [[Big O notation]].
*[[Order (information processing)]], a measure of the number of objects or sub-systems in a system
*[[Metamodeling#Sequential activities|Ordered activities]] in Metamodeling
*[[Order by (SQL)|ORDER BY]] clause in SQL
*Ordered or unordered data in [[Data synchronization]]
*[[Ordered list]] of names or words in HTML
*[[Canonical order]], the order of elements that obeys a certain set of rules or specifications
*[[Z-order]] on computer screens
==In electronics and telecommunications==
*[[First-order hold]] in signal processing
*[[Modulation order]], the number of different symbols that can be sent using a given modulation
*Way of categorizing [[Electronic filter]]s by steepness, see [[Filter design]] and [[Elliptic filter]]
==In architecture and urban planning==
*Architectonic orders: see [[classical order]]
*[[Public order]], a concept in urban planning
==Miscellaneous==
* [[Collation]], the sequencing and ordering of text in alphabetical or [[Lexicographical order]]
* [[Implicate and Explicate Order according to David Bohm|Implicate and Explicate Order]], as defined by David Bohm
* ''[[Orders (film)]]'', a 1974 film by Canadian filmmaker, Michel Brault
==See also==
{|
|- valign=top
|
*[[The Order]] (disambiguation)
*[[Collation (disambiguation)|Collation]] (disambiguation)
*[[Ordinal]]
*[[Ordinate]]
|
*[[Ordination]]
*[[Coordination]]
*[[Subordinate]]
|}
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