The third issue of the series (http://arxiv.org/abs/1110.4864) represents the Proceedings of the Students Training-Contest in Mathematical and Theoretical Physics and includes statements and solutions of the problems offered to the participants.
The contest was held on May 21-24, 2010 and was organized by Scientific Research Laboratory of Mathematical Physics of Samara State University (http://labmathphys.archive.samsu.ru/eng/content/view/39/36/) together with Steklov Mathematical Institute of Russia's Academy of Sciences, and Moscow Institute of Physics and Technology (State University).
The topics covered include classical mechanics, integrable nonlinear systems, probability, integral equations, PDE, quantum and particle physics, cosmology, and other areas of mathematical and theoretical physics.
The present Proceedings can be used by the students of physical and mechanical-mathematical departments of the universities, who are interested in acquiring a deeper knowledge of the methods of mathematical and theoretical physics, and can be also useful for the people involved in teaching mathematical and theoretical physics.