Dirac delta

English

Etymology

Named after English theoretical physicist Paul Dirac (1902–1984); the notation was chosen because the symbol behaves analogously to the Kronecker delta.

Noun

Dirac delta (plural Dirac deltas)

  1. (mathematics) A function-like symbol denoted as δ, with the property , informally understood as a function with an infinite value at 0 and zero elsewhere, and formally as a distribution or a measure.
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