The Erdös Number is quite a well-known quantity.
Some however felt that it was too easy to get a low Erdös number. Enter the Erdös-Bacon-Sabbath Number.
Mine is 10, which I calculate as follows. The fact that it's the same as Richard Feynman's makes me happy.
My Erdös Number is 4.
Erdös (0) co-authored with Bélla Bollobás (1). Bollobás co-authored with Graham Brightwell (2). Brightwell co-authored with Martin Anthony (3). Finally Anthony and I (4) have a long-running collaboration resulting in several papers.
My Bacon Number is 3.
Recently, I (3) was interviewed by the wonderful Philomena Cunk of Charlie Brooker's Weekly Wipe.
Philomena Cunk is played by Diane Morgan (2), who was in The Royal Bodyguard with Stephen Hawke (1).
Stephen Hawke was in X-Men: First Class with Kevin Bacon (0).
My Sabbath Number is 3.
(Note: on the album sleave they appear as Gwyllym & The Raspberry Flavoured Cat. There was a lot of trouble involving contractual nonsense, which also means it's not obvious that The Damned are on there as The Spooks, along with at least one member of The Cult.)
(Note 2: This album was made to celebrate the club Alice in Wonderland, that used to exist on Merde Street in Soho, in the days before Soho got stuffed with highstreet coffee chains and thereby ruined. It is impossible to convey the joyful madness of that place, but you get some idea from the book.)
Roy Wood was a member of The Electric Light Orchestra, as was Bev Bevan (0), and Bev Bevan played for Black Sabbath.