Parabolic BMO and the forward-in-time maximal operator
arXiv:1603.04452 · doi:10.1007/s10231-018-0733-0
Abstract
We study if the parabolic forward-in-time maximal operator is bounded on parabolic BMO. It turns out that for non-negative functions the answer is positive, but the behaviour of sign changing functions is more delicate. The class parabolic BMO and the forward-in-time maximal operator originate from the regularity theory of nonlinear parabolic partial differential equations. In addition to that context, we also study the question in dimension one.
23 pages, 3 figures