%0 Journal Article %A M. Tukhtasinov %A Kh. Ya. Mustapokulov %T $\varepsilon$-positional strategies in the theory of differential pursuit games and the invariance of a constant multivalued mapping in the heat conductivity problem %J Contemporary Mathematics. Fundamental Directions %D 2019 %P 124-136 %V 65 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMFD_2019_65_1_a10/ %G ru %F CMFD_2019_65_1_a10