Speaker: |
Siddharth Bhandari |

Organiser: |
Nikhil S Mande |

Date: |
Friday, 27 Jul 2018, 17:15 to 18:15 |

Venue: |
A-201 (STCS Seminar Room) |

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Let $H$ be a $k+1$-uniform hypergraph on a vertex set $V$ of size $n$. We will assume the following two conditions:

Degree: Every $v\in V$ is in precisely $D$ edges.

Co-Degree: Every distinct pair $v,v'\in V$ have only $o(D)$ edges in common.

It is easy to see that the size of a maximum matching is $N/(k+1)$.

Spencer showed the following surprising theorem. By ordering the edges randomly and then greedily selecting a maximal matching, the expected size is asymptotically $N/(k+1)$.