Order

• Order is the opposite of anarchy and chaos. It is often used in the phrase law and order.
• Legal and military meanings
  • Court order
  • Executive order
  • General order
  • Standing order
• Scientific meanings
  • Order (biology)
  • In computing, canonical order
  • In information processing, order is a measure of the number of objects or sub-systems in a system as seen by an observer.
• Mathematical meanings
  • Order of an ordered set; see also order theory, total order, total preorder and partial order
  • Order of a group or its elements. See order (group theory).
    • Order of an element in some modulus, see multiplicative order
  • Order of a differential equation
  • Big O notation (mathematical), aka the order of an algorithm
• Miscellaneous meanings
  • Order (philosophy)
  • Order (business)
  • Order (religious)
  • Holy Orders
  • Order (military)
  • Architectonic orders: see classical orders
  • Ordered sets of pitches or pitch classes such as a tone row, see the mathematical meaning above.
  • Order (decoration)