Genealogical stuff

Equal Sums of Like Powers

"Other countries may offer you discoveries in manners or lore or landscape; Greece offers you something harder - the discovery of yourself" Laurence Durrell, Prospero's Cell.

• Old (before 1920) postcards from Greece
• Texts in Greek

Those were the days, my friend... and those...

Read about the Erdφs Number :

• Some interesting paths (for Computer Science):
  • 1. Ronald L. Graham; 2. J. D. Ullman; 3. A. V. Aho, J. E. Hopcroft, ...
  • 1. N. G. De Bruijn; 2. D. E. Knuth;
  • 1. M. M. Klaw; 2. Kenneth C. Sevcik;
  • 1. F.R.K. Chung; 2. Arnold L. Rosenberg;
  • 1. Pavol Hell; 2. Xiao-Tie Deng; 3. Christos Papadimitriou; 4. Bill Gates
• Famous persons and (an upper bound to) their Erdφs number (source): Noam Chomsky 4; Alan Turing 5; John L. Hennessy 4; Claude Shannon 3; John von Neumann 3; Albert Einstein 2; Bill Gates 4; Leslie Valiant 3; Karl Popper 4; Kurt Gφdel 3; Enrico Fermi 3; Richard Feynmann 3; ...
• My shortest paths:
  
  • 1. Shmuel Zaks (joint paper with Paul Erdφs in 1988); 2. Jan van Leeuven (joint paper with Shmuel Zaks in 1989); 3. Peter M.W. Knijnenburg (joint paper with Jan van Leeuven in 1991); 4. Rizos Sakellariou (9 joint papers with Peter M.W. Knijnenburg in 1997-1998, 2004-2007)
  • As above, but 3. Harry A.G. Wijshoff (5 joint papers with Jan van Leeuven in 1983-1987); 4. Rizos Sakellariou (2 joint papers with H.A.G. Wijshoff in 1997-1998)
  • 1. Daniel J. Kleitman; 2. Kenneth Steiglitz; 3. Marios D. Dikaiakos; 4. Rizos Sakellariou
  • 1. Bela Bollobas; 2. Dimitrios Gunopulos; 3. Marios D. Dikaiakos; 4. Rizos Sakellariou

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