Search results
Results from the WOW.Com Content Network
With the doubled period, it takes twice as long (or, in a discrete dynamical system, twice as many iterations) for the numerical values visited by the system to repeat themselves. A period-halving bifurcation occurs when a system switches to a new behavior with half the period of the original system.
Social cycle theories are among the earliest social theories in sociology.Unlike the theory of social evolutionism, which views the evolution of society and human history as progressing in some new, unique direction(s), sociological cycle theory argues that events and stages of society and history generally repeat themselves in cycles.
In the Islamic world, Ibn Khaldun (1332–1406) wrote that asabiyyah (social cohesion or group unity) plays an important role in a kingdom's or dynasty's cycle of rise and fall. [ 13 ] G. W. Trompf describes various historic paradigms of historic recurrence, including paradigms that view types of large-scale historic phenomena variously as ...
The authors describe each turning as lasting circa 21 years. Four turnings make up a full cycle of circa 85 years, [43] which the authors term a saeculum, after the Latin word meaning both "a long human life" and "a natural century". [44] Generational change drives the cycle of turnings and determines its periodicity. As each generation ages ...
Eternal return (or eternal recurrence) is a philosophical concept which states that time repeats itself in an infinite loop, and that exactly the same events will continue to occur in exactly the same way, over and over again, for eternity.
This is a list of recurring cycles. See also Index of wave articles, Time, and Pattern. Planetary cycles. Astronomical cycles. Astronomy ...
The time loop is a popular trope in Japanese pop culture media, especially anime. [15] Its use in Japanese fiction dates back to Yasutaka Tsutsui's science fiction novel The Girl Who Leapt Through Time (1965), one of the earliest works to feature a time loop, about a high school girl who repeatedly relives the same day.
A (purely) periodic sequence (with period p), or a p-periodic sequence, is a sequence a 1, a 2, a 3, ... satisfying . a n+p = a n. for all values of n. [1] [2] [3] If a sequence is regarded as a function whose domain is the set of natural numbers, then a periodic sequence is simply a special type of periodic function.