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

Theory of Combinatorial Algorithms

Prof. Emo Welzl and Prof. Bernd Gärtner

Mittagsseminar (in cooperation with M. Ghaffari, A. Steger and B. Sudakov)

Mittagsseminar Talk Information

Date and Time: Tuesday, January 16, 2018, 12:15 pm

Duration: 30 minutes

Location: CAB G51

Speaker: Olaf Parczyk (Goethe University Frankfurt)

Randomly perturbed graphs

We study the model of randomly perturbed dense graphs, that is, for any constant α>0, the union of some n-vertex graph Gα with minimum degree at least αn and the binomial random graph G(n,p). We introduce a general approach for studying the appearance of spanning subgraphs in this model. Using this, we can give simpler proofs of several results in the literature concerning the appearance of different spanning subgraphs in this model and obtain new results for bounded degree graphs, powers of Hamilton cycles and universality for bounded degree trees. This addresses two questions of Krivelevich, Kwan, and Sudakov. This is joint work with Julia Böttcher, Jie Han, Yoshiharu Kohayakawa, Richard Montgomery, and Yury Person.

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