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.