Erdős number describes the "collaborative distance" between mathematician Paul Erdős and another person, as measured by authorship of mathematical papers.
My Erdős number is 3, via several connections:
Kevin Bacon number is defined likewise by the collaborative distance between Kevin Bacon and another person, as measured by common work on a movie or commercial.
My Kevin Bacon number is 3, via several connections:
Black Sabbath number is, likewise, a collaborative distance measured by a common musical artwork.
My Sabbath number is 3, via [Confluence] ↔ Beata Hlavenková ↔ Tony Cousins.
Erdős-Bacon number is the sum of Erdős and Bacon numbers. My Erdős-Bacon number is 6. The list of people with Erdős-Bacon number 6 includes, e.g., Elon Musk, Bill Gates, Richard Feynman, Stephen Hawking, Noam Chomsky.
Erdős-Bacon-Sabbath number is the sum of Erdős, Bacon and Sabbath numbers. My Erdős-Bacon-Sabbath number is 9.