Dirac Delta Function of Matrix Argument
Abstract
Dirac delta function of matrix argument is employed frequently in the development of diverse fields such as Random Matrix Theory, Quantum Information Theory, etc. The purpose of the article is pedagogical, it begins by recalling detailed knowledge about Heaviside unit step function and Dirac delta function. Then its extensions of Dirac delta function to vector spaces and matrix spaces are discussed systematically, respectively. The detailed and elementary proofs of these results are provided. Though we have not seen these results formulated in the literature, there certainly are predecessors. Applications are also mentioned.
Keywords
Cite
@article{arxiv.1607.02871,
title = {Dirac Delta Function of Matrix Argument},
author = {Lin Zhang},
journal= {arXiv preprint arXiv:1607.02871},
year = {2021}
}
Comments
26 pages, LaTeX, no figures. Any comments are welcome!. arXiv admin note: text overlap with arXiv:quant-ph/0012101 by other authors