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Academy of Mathematics and Systems Science, CAS
Colloquia & Seminars

Speaker:

Prof. Xinliang An, University of Toronto

Inviter:  
Title:
On Singularity Formation in General Relativity
Time & Venue:
2017.12.22 10:30-11:30 N913
Abstract:
In the process of gravitational collapse, singularities may form, which are either covered by trapped surfaces (black holes) or visible to faraway observers (naked singularities). In this talk, with three different approaches coming from hyperbolic PDE, quasilinear elliptic PDE and dynamical system, I will present results on four physical questions: i) Can “black holes” form dynamically in the vacuum? ii) To form a “black hole”, what is the least size of initial data? iii) Can we find the boundary of a “black hole” region? Can we show that a “black hole region” is emerging from a point? iv) For Einstein vacuum equations, could singularities other than black hole type form in gravitational collapse?
 

 

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