Mappings with Direct and Inverse Poletsky Inequalities

Evgeny Sevost’yanov is Head of Department of Mathematical Analysis, Business Analysis and Statistics at Zhytomyr Ivan Franko State University, Ukraine. His research interests include mapping theory and its applications to equations with partitional derivatives. The main results of E. Sevost’yanov concern the local and boundary behavior of mappings, mappings of metric spaces and Riemannian manifolds, quotient spaces and Riemannian surfaces. From 2002 up to now E. Sevost’yanov works as a researcher in Institute of Applied Mathematics and Mechanics of the National Academy of Sciences of Ukraine (located in Donetsk up to 2014, and in Slov’yans’k from 2014). From 2014 up to now E. Sevost’yanov works in Zhytomyr Ivan Franko State University, which belongs to the system of Ministry of Education and Science of Ukraine. Candidate of Physical and Mathematical Sciences (2006), Doctor of Physical and Mathematical Sciences (2013), Senior Researcher (2011).