21. The simplest example of a discrete measure on the real line is the Dirac delta function \ delta. 22. It represents the response of the circuit to an input voltage consisting of an impulse or Dirac delta function . 23. The theory of distributions clarifies the ( then ) mysteries of the Dirac delta function and Heaviside step function. 24. The degree distribution in the case of the ring lattice is just a Dirac delta function centered at K. 25. The function values along the z-axis of the 3D optical transfer function correspond to the Dirac delta function . 26. Where \ delta is the Dirac delta function , i . e ., the interaction is a contact interaction. 27. The usual Dirac delta function be used in some cases, e . g . when the surface is spherical. 28. An important special case is where ? is a probability measure or, even more specifically, the Dirac delta function . 29. Is the discrete-time unit impulse function ( cf Dirac delta function which is a continuous-time version ). 30. It is one way of formalizing the idea of the Dirac delta function , an important tool in physics and engineering.
