## Differential Equations and Mathematical Physics Seminar

The next meeting of the Differential Equations and Mathematical Physics Seminar will be held online via Zoom on January 20, 2021, at 2:15 p.m. A talk on: Intersecting Null Cones and Mathematical Modeling of GPS, GLONASS Intersatellite Communications in the Gravitational Field of Near-Earth Space with Account of General Relativity Theory will be delivered by Dr. Bogdan Dimitrov, Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences. Join Zoom Meeting: https://us02web.zoom.us/j/87368542312?pwd=ZkRZTkp6aTl0U0o0UlZ2L0h3Q0lBZz09 Department of Differential Equations and Mathematical hysics