<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In this article we prove the friendship theorem according to the article [1], which states that if a group of people has the property that any pair of persons have exactly one common friend, then there is a universal friend, i.e. a person who is a friend of every other person in the group</p></abstract>

In this article we prove the friendship theorem according to the article [1], which states that if a group of people has the property that any pair of persons have exactly one common friend, then there is a universal friend, i.e. a person who is a friend of every other person in the group

The Friendship Theorem

Institute of Informatics, University of Białystok, Poland

Formalized Mathematics

{"article-title":"The Friendship Theorem"}

In this article we prove the friendship theorem according to the article [1], which states that if a group of people has the property that any pair of persons...

The Friendship Theorem

Online veröffentlicht: 02. Feb. 2013

Seitenbereich: 235 - 237

DOI: https://doi.org/10.2478/v10037-012-0028-7

This content is open access.