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