To the 70th anniversary of Nina Nikolaevna Ural'tseva

Nina Nikolaevna Uraltseva is a world-renowed specialist in the field of nonlinear partial differential equations. She has obtained fundamental results in the theory of elliptic and parabolic equations and variational inequalities. She is the author of more than 100 scientific works and three monographs [1–3]. These monographs are well known in the world; they were translated in the USA, France, and China. These books are widely used by all specialists in partial differential equations.