The Delta Symbol (Δ) is a Greek letter commonly used in mathematics and science. In mathematics, it often represents change or difference, such as in the formula for calculating the change in a variable. For example, Δx indicates the change in the variable x. In addition to its mathematical significance, the Delta symbol is also used in various scientific fields. In physics, it can denote a difference in quantities, like temperature (ΔT) or pressure (ΔP). The symbol is also associated with the Delta Air Lines, a major American airline, which uses a stylized version of the symbol in its logo.