Kissing Number

Kissing number problem

http://en.wikipedia.org/wiki/Kissing_number_problem

we improve the kissing numbers in dimensions 25 through 31.

http://mathworld.wolfram.com/KissingNumber.html

...from the description of a talk to be given on Monday, March 7, 2011 at Northeastern University, by mathematician Abhinav Kumar (whose Erdös Number is 2 — a fact of interest to those interested in Erdös Numbers.

http://www.math.neu.edu/GASC/abs/kumar11.html

Erdős number http://en.wikipedia.org/wiki/Erd%C5%91s_number

List of people by Erdős number

http://en.wikipedia.org/wiki/List_of_people_by_Erd%C5%91s_number

MathSciNet: Collaboration distance - American Mathematical Society

http://www.ams.org/mathscinet/collaborationDistance.html

The Erdös Number Project http://www.oakland.edu/enp/