Progression may refer to: In mathematics: *

Arithmetic progression An arithmetic progression or arithmetic sequence () is a sequence of numbers such that the difference between the consecutive terms is constant. For instance, the sequence 5, 7, 9, 11, 13, 15, . . . is an arithmetic progression with a common differ ...

, sequence of numbers such that the difference of any two successive members of the sequence is a constant *

Geometric progression In mathematics, a geometric progression, also known as a geometric sequence, is a sequence of non-zero numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the ''common ratio''. For ex ...

, sequence of numbers such that the quotient of any two successive members of the sequence is a constant *

Harmonic progression (mathematics) In mathematics, a harmonic progression (or harmonic sequence) is a progression formed by taking the reciprocals of an arithmetic progression. Equivalently, a sequence is a harmonic progression when each term is the harmonic mean of the neighbo ...

, sequence of numbers such that their reciprocals form an arithmetic progression In music: *

Chord progression In a musical composition, a chord progression or harmonic progression (informally chord changes, used as a plural) is a succession of chords. Chord progressions are the foundation of harmony in Western musical tradition from the common practice ...

, series of chords played in order **

Backdoor progression In jazz and jazz harmony, the chord progression from iv7 to VII7 to I (the tonic or "home" chord) has been nicknamed the backdoor progressionCoker, Jerry (1997). ''Elements of the Jazz Language for the Developing Improvisor'', p.82. . "Back Doo ...

, the cadential chord progression from iv7 to I, or flat-VII7 to I in jazz music theory ** Omnibus progression, sequence of chords which effectively divides the octave into 4 equal parts ** Ragtime progression, chord progression typical of ragtime music and parlour music genres * Progression, music software for guitarists * '' Progression'', Markus Schulz's second Artist Album, released in 2007 In other fields: * Age progression, the process of modifying a photograph of a person to represent the effect of aging on their appearance * Cisternal progression, theory of protein transport through the Golgi apparatus inside a cell *

Color progression In color science, a color gradient specifies a range of position-dependent colors, usually used to fill a region. Name A color gradient is also known as a color ramp or a color progression. In assigning colors to a set of values, a gradie ...

, ranges of color whose values transition smoothly through a hue, saturation, luminance, or any combination of the three *

Horizontal progression In Western handwriting, horizontal progression is the gradual movement from left to right during writing a line of text. In Hebrew and Arabic writing systems, the movement is from right to left. See also *Graphonomics Graphonomics is the inte ...

, the gradual movement from left to right during writing a line of text in Western handwriting * A

progressive tax A progressive tax is a tax in which the tax rate increases as the taxable amount increases.Sommerfeld, Ray M., Silvia A. Madeo, Kenneth E. Anderson, Betty R. Jackson (1992), ''Concepts of Taxation'', Dryden Press: Fort Worth, TX The term ''progre ...

is a tax by which the tax rate increases as the taxable amount increases *

Semantic progression Semantic change (also semantic shift, semantic progression, semantic development, or semantic drift) is a form of language change regarding the evolution of word usage—usually to the point that the modern meaning is radically different from ...

, evolution of word usage *

Educational progression Education is a purposeful activity directed at achieving certain aims, such as transmitting knowledge or fostering skills and character traits. These aims may include the development of understanding, rationality, kindness, and honesty. V ...

, an individual's movement through stages of

education Education is a purposeful activity directed at achieving certain aims, such as transmitting knowledge or fostering skills and character traits. These aims may include the development of understanding, rationality, kindness, and honesty ...

and/or

training Training is teaching, or developing in oneself or others, any skills and knowledge or fitness that relate to specific useful competencies. Training has specific goals of improving one's capability, capacity, productivity and performance. I ...

* Progress tracking in video games *

Astrological progression Astrological progressions are one of the main means used in Horoscopic astrology to forecast future trends and developments (the other means is transits, which are simply the ongoing movements of the planets across the sky). As its name implies, ...

, used in Horoscopic astrology to forecast future trends and developments.