Periodicity
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Periodicity may refer to:
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In mathematics [edit]
- Bott periodicity theorem, describing a periodicity in the homotopy groups of classical groups
- Fokker periodicity blocks, which mathematically relate musical intervals
- Periodic function, a function whose output contains values that repeat periodically
- Quasiperiodicity, property of a system that displays irregular periodicity
- Fourier series, decomposition of any periodic function or periodic signal into a set of simple oscillating functions
In the physical sciences [edit]
- Periodic table, classification of chemical elements by means of the periodicity of their chemical properties
- Redshift periodicity, astronomical term for redshift quantization
In accounting [edit]
- Principle of periodicity, in generally accepted accounting principles
See also [edit]
- Cycle (disambiguation)
- Frequency (disambiguation)
- Seasonality, periodic variation, or periodic fluctuations
- Simultaneity (disambiguation)
- Synchronicity, experience of two or more events that are apparently causally unrelated occurring together in a meaningful manner
- Utility frequency, the frequency at which alternating current (AC) is transmitted from a power plant to the end user
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