Dirac delta

短语

词形变化

Dirac deltas 复数 Dirac deltas

释义与例句

n.
  1. 1.

    A function-like symbol denoted as δ, with the property ∫f(t)δ(x-t)dt=f(x), informally understood as a function with an infinite value at 0 and zero elsewhere, and formally as a distribution or a measure.

    数学

词源

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

来源：wiktionary