# arrow diagram

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*English-Chinese construction dictionary (英汉建筑大词典).
2013.*

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**Diagram (category theory)**— In category theory, a branch of mathematics, a diagram is the categorical analogue of an indexed family in set theory. The primary difference is that in the categorical setting one has morphisms. An indexed family of sets is a collection of sets … Wikipedia**Dynkin diagram**— See also: Coxeter–Dynkin diagram Finite Dynkin diagrams Affine (extended) Dynkin diagrams … Wikipedia**Commutative diagram**— For help on drawing commutative diagrams on Wikipedia, see meta:Help:Displaying a formula#Commutative diagrams. In mathematics, and especially in category theory, a commutative diagram is a diagram of objects (also known as vertices) and… … Wikipedia**Feynman diagram**— The Wick s expansion of the integrand gives (among others) the following termNarpsi(x)gamma^mupsi(x)arpsi(x )gamma^ upsi(x )underline{A mu(x)A u(x )};,whereunderline{A mu(x)A u(x )}=int{d^4pover(2pi)^4}{ig {mu u}over k^2+i0}e^{ k(x x )}is the… … Wikipedia**State diagram**— State diagrams is a diagram used in the field of computer science, representing the behavior of a system, which is composed of a finite number of states. There are many forms of state diagrams, which differ slightly and have different semantics.… … Wikipedia**Process-data diagram**— A process data diagram is a diagram that describes processes and data that act as output of these processes. On the left side the meta process model can be viewed and on the right side the meta concept model can be viewed. A process data diagram… … Wikipedia**Cichoń's diagram**— In set theory, Cichoń s diagram or Cichon s diagram is a table of 10 infinite cardinal numbers related to the set theory of the reals displaying the provable relations between these cardinal invariants. All these cardinals are greater than or… … Wikipedia**Data structure diagram**— Example of a Data Structure Diagram. A Data Structure Diagram (DSD) is a data model used to describe conceptual data models by providing graphical notations which document entities and their relationships, and the constraints that binds them. The … Wikipedia**Use case diagram**— A use case diagram is a type of behavioral diagram defined by the Unified Modeling Language (UML) and created from a Use case analysis. Its purpose is to present a graphical overview of the functionality provided by a system in terms of actors,… … Wikipedia**Composite structure diagram**— UML diagrams Structural UML diagrams Class diagram Component diagram Composite structure diagram Deployment diagram Object diagram … Wikipedia**Entropy (arrow of time)**— Entropy is the only quantity in the physical sciences that picks a particular direction for time, sometimes called an arrow of time. As one goes forward in time, the second law of thermodynamics says that the entropy of an isolated system can… … Wikipedia