
Personal
On this page, I will write about anything nonwork related that I think is interesting, kind of like a blog.
Erdős number
An Erdös number of a person describes the maximum number of papers through which that person is linked, by a chain of coauthors, to the prolific mathematician Paul Erdös. For example, the following series of papers:
 S. R. Blackburn, K. Brincat, F. Mirza, and S. Murphy, “Cryptanalysis of ‘Labyrinth’ Stream Cipher”, IEE Electronics Letters, 38(12):12201221, 1998.
 X. Lai, J. L. Massey, and S. Murphy, “Markov Ciphers and Differential Cryptanalysis”, in Advances in Cryptology  EUROCRYPT `91 , LNCS 547, pp. 1738, SpringerVerlag, 1991.
 D. R. Stinson, J. L. Massey, “An Infinite Class of Counterexamples to a Conjecture Concerning Nonlinear Resilient Functions”, J. Cryptology, 8(3): 167173, 1995.
 P. Erdös, R. C. Mullin, V. Sos, and D. R. Stinson, “Finite linear spaces and projective planes”, Discrete Math., 47:4962, 1983.
Leads to the (first) following chain of coauthors, linking me to Paul Erdös:
 ErdösStinsonMasseyMurphyMirza (Fauzan) [4]
 ErdösCohenShparlinskiBlackburnMirza (Fauzan) [4]
In his lifetime, Paul Erdös published over 1500 papers and, as a result of having over 500 coauthors, many famous scientists, engineers and Nobel Prize laureates have a finite Erdös number, such as:
 ErdösHellDengPapadimitriouGates (Bill) [4] Founder and CEO of Microsoft
 ErdösOdlyzkoSkinnerWiles (Andrew) [3] Prover of Fermat's Last Theorem
 ErdösStrausEinstein (Albert) [2] Inventor of the theory of relativity, Nobel laureate (Physics)
 ErdösChuiWardSalam (Abdus) [3] Pakistani Nobel laureate (Physics)
 ErdösConwayBerlekampShannon (Claude) [3] “Father of information theory”
 ErdösHoltonHiltonWhiteheadNewmanTuring (Alan) [5] “Father of modern computer science”
 ErdösDarlingTaylorMandelbrot (Benoit) [3] “Father of fractal geometry”
 ErdösNivenSchutzenbergerChomsky (Noam) [3] Ideas of formal languages and grammers
 ErdösOdlyzkoCoppersmith (Don) [2] Inventor of Data Encryption Standard (DES) block cipher
 ErdösLinialRivest (Ron) [2] Inventor of RSA publickey cryptography and RC4/RC5 ciphers
Hence, through Paul Erdös and a chain of various coauthors, any person with a finite Erdös number is linked to everyone else with a finite Erdös number. So, for example, I am linked to Microsoft CEO Bill Gates by a list of 4+4=8 papers (at most) and to physicist Albert Einstein by a list of 4+2=6 papers (at most).
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Or is there? I'll add some more stuff here later. Maybe.

