%0 Journal Article %A Stefan Steinerberger %T A rigidity phenomenon for the Hardy–Littlewood maximal function %J Studia Mathematica %D 2015 %P 263-278 %V 229 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm8368-12-2015/ %R 10.4064/sm8368-12-2015 %G en %F 10_4064_sm8368_12_2015