Erdős–Bacon number

4

Physicist Nicholas Metropolis has an Erdős number of 2,^[4] and also a Bacon number of 2 via the Woody Allen film Husbands and Wives,^[5] giving him an Erdős–Bacon number of 4.

6

Metropolis and Richard Feynman both worked on the Manhattan Project at Los Alamos Laboratory. Via Metropolis, Feynman has an Erdős number of 3 and, from having appeared in the film Anti-Clock alongside Tony Tang, Feynman also has a Bacon number of 3. Richard Feynman thus has an Erdős–Bacon number of 6.^[4]

Theoretical physicist Stephen Hawking has an Erdős–Bacon number of 6: his Bacon number of 2 (via his appearance alongside John Cleese in Monty Python Live (Mostly), who acted alongside Kevin Bacon in The Big Picture) is lower than his Erdős number of 4.^[6]

Linguist Noam Chomsky has an Erdős number of 4,^[7] he also co-starred with Danny Glover in the 2005 documentary The Peace!, giving him a Bacon number of 2^[8] and combined Erdős–Bacon number of 6.

7

Scientist Carl Sagan has an Erdős–Bacon number of 7, from a Bacon number of 3 and an Erdős number of 4.^[9]

Physicist and philosopher of science James Owen Weatherall has an Erdős-Bacon number of 7. His Erdős number is 4 and his Bacon number is 3, having appeared in The Edge of All We Know with Stephen Hawking.

4

Canadian actor Albert M. Chan has Erdős–Bacon number of 4. He co-authored a peer-reviewed paper on orthogonal frequency-division multiplexing, giving him an Erdős number of 3.^[10][11][12] Chan appeared alongside Kevin Bacon in Patriots Day, giving him a Bacon number of 1.^[13]

6

American actress Danica McKellar, who played Winnie Cooper in The Wonder Years, has an Erdős–Bacon number of 6. While an undergraduate at the University of California, Los Angeles, McKellar coauthored a mathematics paper^[14] with Lincoln Chayes, who via his wife Jennifer Tour Chayes^[15] has an Erdős number of 3, giving McKellar one of 4. Having worked with Margaret Easley, McKellar has a Bacon number of 2.^[2]

British actor Colin Firth has an Erdős–Bacon number of 6. Firth is credited as co-author of a neuroscience paper, "Political Orientations Are Correlated with Brain Structure in Young Adults",^[16] after he suggested on BBC Radio 4 that such a study could be done.^[17] Another author of that paper, Geraint Rees, has an Erdős number of 4,^[18] which gives Firth an Erdős number of 5. Firth's Bacon number of 1 is due to his appearance in Where the Truth Lies.^[19][20]

7

Israeli-American actress Natalie Portman has an Erdős–Bacon number of 7.^[21] She collaborated (using her birth name, Natalie Hershlag) with Abigail A. Baird,^[22] who has a collaboration path^[23][24][25] leading to Joseph Gillis, who has an Erdős number of 1, giving Portman an Erdős number of 5.^[26] Portman appeared in A Powerful Noise Live (2009) with Sarah Michelle Gellar, who appeared in The Air I Breathe (2007) with Bacon, giving Portman a Bacon number of 2.^[27]

American actress Kristen Stewart has an Erdős–Bacon number of 7; she is credited as a co-author on an artificial intelligence paper that was written after a technique was used for her short film Come Swim, giving her an Erdős number of 5,^[28][29] and she co-starred with Michael Sheen in Twilight, who co-starred with Bacon in Frost/Nixon, giving her a Bacon number of 2.^[30]