Progression

Progression may refer to:

In mathematics:

• Arithmetic progression, sequence of numbers such that the difference of any two successive members of the sequence is a constant
• Geometric progression, sequence of numbers such that the quotient of any two successive members of the sequence is a constant

In music:

• Chord progression, series of chords played in order
  • Backdoor progression, 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, software, music software for guitarists

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, ranges of color whose values transition smoothly through a hue, saturation, luminance, or any combination of the three
• Horizontal progression, the gradual movement from left to right during writing a line of text in Western handwriting
• A progressive tax is a tax by which the tax rate increases as the taxable amount increases
• Semantic progression, evolution of word usage
• Educational progression, an individual's movement through stages of education and/or training
• Progress tracking in video games
• Astrological progression, used in Horoscopic astrology to forecast future trends and developments.