Periodicity
Look up periodicity or periodic in Wiktionary, the free dictionary.
Periodicity or periodic may refer to:
Mathematics
- Bott periodicity theorem, addresses Bott periodicity: a modulo-8 recurrence relation in the homotopy groups of classical groups
 - Periodic function, a function whose output contains values that repeat periodically
 - Periodic mapping
 
Physical sciences
- Periodic table of chemical elements
 - Periodic trends, relative characteristics of chemical elements observed
 - Redshift periodicity, astronomical term for redshift quantization
 - Log-periodic antenna, type of broadband radio antenna
 
Other uses
- Fokker periodicity blocks, which mathematically relate musical intervals
 - Periodic acid, a compound of iodine
 - Principle of periodicity, a concept in generally accepted accounting principles
 - Quasiperiodicity, property of a system that displays irregular periodicity
 
See also
- Aperiodic (disambiguation)
 - Cycle (disambiguation)
 - Frequency (disambiguation)
 - Period (disambiguation)
 - Periodical
 - Seasonality, periodic variation, or periodic fluctuations