Department of Computer Science | Institute of Theoretical Computer Science | CADMO

Prof. Emo Welzl and Prof. Bernd Gärtner

Mittagsseminar Talk Information |

**Date and Time**: Tuesday, July 05, 2016, 12:15 pm

**Duration**: 30 minutes

**Location**: CAB G11

**Speaker**: Milos Trujic

The celebrated result of Dirac states that any graph on n > 2 vertices with minimum degree at least n/2 contains a Hamilton cycle. Recently, Balogh, Mousset, and Skokan generalised this result by showing that for any integer k > 1 and sufficiently large n, the vertex set of a graph G on n vertices with minimum degree at least n/k can be covered by at most k - 1 cycles.

In this thesis we extend the result of Balogh et al. to a sparse setting. Namely, we show that for any integer k > 1 the vertex set of a random graph G(n, p) with p > n^(-1 + o(1)) can be covered by at most k - 1 cycles even after removing at most ((k - 1)/k - o(1))-fraction of the edges touching each vertex. Our results are optimal with respect to the constant (k - 1)/k and almost optimal with respect to the edge probability p.

Thesis supervised by Angelika Steger, Frank Mousset, and Nemanja Škorić.

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