AG 1   Info

AG Audience

English

30 Minutes

Saarbrücken

In the Feedback Vertex Set problem, given a directed graph G, the task is to remove a minimum number of vertices to make it acyclic. Even when restricted to the class of Tournaments, i.e. complete directed graphs, this problem remains NP-Complete. It is easy to show that the problem admits a 3-approximation algorithm, and under the Unique Games Conjecture it cannot have a better than 2-approximation. Previous results improving upon the 3-approximation were highly non-trivial, and it was a long-standing open problem to obtain a 2-approximation for it. In this work we give a simple randomized algorithm to resolve this question.

---------------
Join Zoom Meeting
Meeting ID: 527 278 8807

Note: for people outside D1 interested in listening to this talk, please contact Sándor Kisfaludi-Bak at skisfalu@mpi-inf.mpg.de for the password.

Sándor Kisfaludi-Bak

--email hidden

passcode not visible

logged in users only

Join Zoom Meeting
Meeting ID: 527 278 8807

Note: for people outside D1 interested in listening to this talk, please contact Sándor Kisfaludi-Bak at skisfalu@mpi-inf.mpg.de for the password.