Editing Marcinkiewicz interpolation theorem (section)

==History==
The theorem was first announced by {{harvtxt|Marcinkiewicz|1939}}, who showed this result to [[Antoni Zygmund]] shortly before he died in World War II.  The theorem was almost forgotten by Zygmund, and was absent from his original works on the theory of [[singular integral operator]]s.  Later {{harvtxt|Zygmund|1956}} realized that Marcinkiewicz's result could greatly simplify his work, at which time he published his former student's theorem together with a generalization of his own.

In 1964 [[Richard Allen Hunt|Richard A. Hunt]] and [[Guido Weiss]] published a new proof of the Marcinkiewicz interpolation theorem.<ref name="HuntWeiss1964">{{cite journal|last1=Hunt|first1=Richard A.|last2=Weiss|first2=Guido|title=The Marcinkiewicz interpolation theorem|journal=Proceedings of the American Mathematical Society|volume=15|issue=6|year=1964|pages=996–998|issn=0002-9939|doi=10.1090/S0002-9939-1964-0169038-4|doi-access=free}}</ref>