Also his last book Mathematical problems of the kinetic theory of gas which deals with the mathematical aspects of the Boltzmann transport equation was published, after his death, in 1957 with some additional material submitted by L Carleson and O Frostman.
Din ang kanyang huling libro matematiko problema ng kinetiko teorya ng gas na trato sa matematika aspeto ng Boltzmann sasakyan equation ay nai-publish, pagkatapos ng kanyang kamatayan, sa 1957 na may ilang karagdagang mga materyal na isinumite sa pamamagitan ng L Carleson at O Frostman.