AskDefine | Define convergence

Dictionary Definition

convergence

Noun

1 the occurrence of two or more things coming together
2 the approach of an infinite series to a finite limit [syn: convergency] [ant: divergence, divergence]
3 a representation of common ground between theories or phenomena; "there was no overlap between their proposals" [syn: overlap, intersection]
4 the act of converging (coming closer) [syn: converging, convergency]

User Contributed Dictionary

English

Noun

  1. the act of moving toward union or uniformity.
  2. a meeting place
    We built a homestead at the convergence of two rivers
  3. the intersection of three electron beams for red, green and blue onto a single pixel in a CRT
  4. the process of approaching some limiting value
  5. the coordinated focusing of the eyes, especially at short range
  6. the evolution of similar structures or traits in unrelated species in similar environments; convergent evolution
  7. the merging of distinct technologies, industries, or devices into a unified whole (ex AT&T buying out every other company to have a monopoly as they did in the 1980's and have succeeded into doing once more after the recent purchase of cingular.)

Translations

the act of converging
a meeting place
the intersection of three electron beams
the process of approaching some limiting value

French

Noun

fr-noun f

Extensive Definition

In the absence of a more specific context, convergence denotes the approach toward a definite value, as time goes on; or to a definite point, a common view or opinion, or toward a fixed or equilibrium state. Convergent is the adjectival form, and also a noun meaning an iterative approximation.

Mathematics

In mathematics, convergence describes limiting behaviour, particularly of an infinite sequence or series, toward some limit. To assert convergence is to claim the existence of such a limit, which may be itself unknown. For any fixed standard of accuracy, however, you can always be sure to be within that limit, provided you have gone far enough. The following lists more specific usages of this word:
The opposite of convergence is divergence. Divergence may be some kind of oscillation, unrestricted growth (recognised as the case of an infinite limit), or chaotic behavior. An infinite series that is divergent cannot be used for meaningful computations of its value. Nevertheless, divergent series can be summed formally, as generating functions or asymptotic series, or via some summation method.

Natural sciences

  • Convergent evolution pertains to organisms not closely related that independently acquire similar characteristics while evolving in separate and sometimes varying ecosystems.
  • Convergent synthesis is a strategy that aims to improve the efficiency of multi-step chemical synthesis.
  • Convergent boundary is a fault boundary defined in the specialty of geology known as plate tectonics.
  • Convergence zone in meteorology is an area where the horizontal wind produces a net in-flow of air
  • Convergence is the simultaneous inward movement of both eyes toward each other, usually in an effort to maintain single binocular vision when viewing an object.

Computing and technology

  • Technological convergence refers to a trend where some technologies having distinct functionalities evolve to technologies that overlap, i.e. multiple products come together to form one product, with the advantages of each initial component.
  • Convergence (evolutionary computing) is a means of modeling the tendency for genetic characteristics of populations to stabilize over time.
  • Premature convergence is an anomaly in evolutionary computation in which the population evolved to some stable yet sub-optimal state.

Social sciences

  • Language convergence pertains to the blending of two languages that are perceived as having equal social status. Opposite of Non-convergent discourse.
  • Non-convergent discourse pertains to the persistence of asymmetric or bilingual discourse in natural languages.
  • Catch-up effect is otherwise known as the theory of convergence in economic theory.
  • Convergence criteria are requirements specified by the European Union that stipulate the membership qualifications each state must fulfill.
  • Media convergence refers to the removal of entry barriers across the IT, telecoms, media and consumer electronics industries, creating one large 'converged' industry.
  • Telecommunication convergence is a marketing concept with heavy technological implications, referring to the bundling of services by telecoms players, both in terms of the product portfolio they offer (vertical convergence), and of the channels through which their products are sold and serviced (horizontal convergence).
convergence in Bulgarian: Конвергенция
convergence in Czech: Konvergence
convergence in German: Konvergenz
convergence in French: Convergence
convergence in Italian: Convergenza
convergence in Hebrew: התכנסות
convergence in Georgian: კრებადობა
convergence in Hungarian: Konvergencia
convergence in Dutch: Convergentie (wiskunde)
convergence in Norwegian: Konvergens
convergence in Polish: Zbieżność
convergence in Russian: Конвергенция
convergence in Serbian: Конвергенција
convergence in Finnish: Konvergenssi
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