Iterations of Hardy-Littlewood maximal functions

C. J. Neugebauer
1987 Proceedings of the American Mathematical Society  
It is shown that the iteration of two maximal functions is essentially no larger than the inner maximal function.
doi:10.1090/s0002-9939-1987-0902540-9 fatcat:c7qwti7davaajhv3zk7fbhw6fe