On the 8th of January 2015, at 10:15 a.m.
Piotr Waluk (KMMF WFUW)
will give a talk on
"Various ways to positivity"
Abstract
ADM mass proves useful in analysis of asymptotically flat
spacetimes, although the study of the notion itself was not devoid of
difficulties. A good example here is the question of positive definiteness
of this quantity, which had to wait over twenty years for a decisive answer.
The talk will consist of a short historical review of main methods used to
approach the problem, followed by a presentation of an alternative proof of
positive-energy theorem, based on elementary tools of differential geometry
only.
The seminar takes place on Thursdays from 10:15 a.m. to 12:00
in the room 2.23 of the main building of the Faculty of Physics (the 2nd floor), Pasteur Str. 5,
Warszawa.
Additional information can be found on the webpage
http://oldwww.fuw.edu.pl/KMMF/sem.czw.przedp.html.
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