Delta (letter) - Upper Case

Upper Case

The upper-case letter Δ can be used to denote

  • Change of any variable quantity, in mathematics and the sciences (More specifically, the difference operator); for example, in
, the average change of y per unit x, i.e. the change of y over the change of x
  • The Laplace operator:
  • The discriminant of a polynomial equation, especially the quadratic equation:
  • A macroscopic change in the value of a variable in mathematics or science
  • Uncertainty in a physical variable as seen in for instance the uncertainty principle
  • An interval of possible values for a given quantity for instance across a sample
  • Any of the delta particles in particle physics
  • The determinant of the matrix of coefficients of a set of linear equations (see Cramer's Rule)
  • That an associated locant number represents the location of a covalent bond in an organic compound, the position of which is variant between isomeric forms
  • In chemistry, it is often used to represent the addition of heat in a reaction.
  • In legal shorthand, it represents a defendant
  • In the financial markets, it is one of the Greeks that describes the rate of change of an option price for a given change in the underlying benchmark
  • It is the symbol of the Greek inventor and architect Daedalus
  • Signifies a major seventh chord in jazz music notation.
  • In genetics, it can stand for a gene deletion, e.g. the CCR5-Δ32 a deletion of the CCR5 at the 32nd base pair segment
  • The American Dental Association cites it (together with omicron for "odont") as the symbol of dentistry.

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