string diagram
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String diagram — In category theory, string diagrams are a way of representing 2 cells in 2 categories. The idea is to represent structures of dimension d by structures of dimension 2 d , using the Poincaré duality. Thus, * an object is represented by a portion… … Wikipedia
String field theory — In theoretical physics, string field theory is a proposal to define string theory in such a way that the background independence is respected. String field theory can be understood as a quantum field theory with infinitely many fields which are… … Wikipedia
string diagrams — A technique employed in work study that uses string wrapped around points on a scale layout diagram to calculate movement. Computerized methods are replacing manual methods, but the generic name is still used … Big dictionary of business and management
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
Non-critical string theory: Lorentz invariance — Usually non critical string theory is considered in frames of the approach proposed by Polyakov [1]. The other approach has been developed in [2] [3] [4]. It represents a universal method to maintain explicit Lorentz invariance in any quantum… … Wikipedia
List of string theory topics — See also: List of mathematical topics in quantum theory This is an list of string theory topics. Contents 1 String theory 1.1 String duality 1.2 Particles and fields 1 … Wikipedia
Quiver diagram — In physics, a quiver diagram is a graph representing the matter content of a gauge theory that describes D branes on orbifolds. Each node of the graph corresponds to a factor U(N) of the gauge group, and each link represents a field in the… … Wikipedia
indicator diagram — Indicator In di*ca tor ([i^]n d[i^]*k[=a] t[ e]r), n. [L.: cf. F. indicateur.] [1913 Webster] 1. One who, or that which, shows or points out; as, a fare indicator in a street car. [1913 Webster] 2. (Mach.) A pressure gauge; a water gauge, as for… … The Collaborative International Dictionary of English
List of mathematics articles (S) — NOTOC S S duality S matrix S plane S transform S unit S.O.S. Mathematics SA subgroup Saccheri quadrilateral Sacks spiral Sacred geometry Saddle node bifurcation Saddle point Saddle surface Sadleirian Professor of Pure Mathematics Safe prime Safe… … Wikipedia
NP (complexity) — Diagram of complexity classes provided that P ≠ NP. The existence of problems outside both P and NP complete in this case was established by Ladner.[1] In computational complexity theory, NP is one of the most fundamental complexity classes. The… … Wikipedia
Ontario general election, 1985 — Diagram of the 1985 election results in the Provincial Legislature The Ontario general election of 1985 was held on May 2, 1985, to elect members of the 33rd Legislative Assembly of the Province of Ontario, Canada. This election ended 42 years of … Wikipedia
