[Author] Mironenko, F. D. [Title] Maximum estimates for solutions to elliptic and parabolic equations on a book-type stratified set [AMS Subj-class] 35B45 A priori estimates in context of PDEs 35B50 Maximum principles in context of PDEs [Keywords] maximum estimates, stratified sets [Abstract] We prove the Aleksandrov–Bakelman-Krylov type maximum principle for linear elliptic and parabolic second order equation on a “book” type stratified set. [Comments] Russian, 23 pp. [Contact e-mail] fomius2000@yandex.ru