# Subregion in gravity Finite subregions in relativistic gravitational theories are particularly subtle due to their diffeomorphism-invariant nature. ## Refs - [[2016#Donnelly, Freidel]] - [[DonnellyGiddings2017]] - [[DonnellyGiddings2018]] - [[Kirklin2018]] - [[Camps2018]] - [[Giddings201903]] - [[2023#Balasubramanian, Cummings]]: entropy of finite gravitating regions ## Related - [[0044 Extended phase space]]