Erdős number

The Erdős number () honors the Hungarian mathematician Paul Erdős. Erdős was one of the most prolific mathematical writers. He worked with many mathematicians. 

Paul Erdős's number is 0. Anyone who directly worked with Paul Erdős has an Erdős number of 1. Anyone who works with those collaborators who have an Erdős number of 1, has an Erdős number of 2. The chain continues like that.

Related pages
 Bacon number

Other websites
 Jerry Grossman, The Erdös Number Project. Contains statistics and a complete list of all mathematicians with an Erdős number less than or equal to 2.
Erdős number project 

Category:Mathematics