Recent content by Jummeh

  1. J

    Plane Maps and Planar Graphs: A Mutual Relationship?

    yes basically, but why can there not be maps of non-planar graphs?
  2. J

    Plane Maps and Planar Graphs: A Mutual Relationship?

    Plane Map <=> Planar Graph ?? Hi, Wondering if anyone can help me to find some kind of proof that all Plane Maps can be represented by planar graphs and vice versa... for all Planar Graphs exists a Plane Map? I did a quick search without much luck. Thanks
  3. J

    2 fundmental ways of cryptography asymeteric and symeteric

    Schneier's book doesn't tell you why the systems are used that way, infact it just tells you in a rather coarse way to "do this and do that"... Try "Modern Cryptography: Theory and Practice" by Wenbo Mao or "Cryptography" by Nigel Smart for a more mathematical look on crypto.
  4. J

    Goldbach Conjecture: Proving the Theory

    Hi, I am intrigued at how this is almost proven on a computer? Since you have to test all the even integers to infinity, I am assuming you guys are almost at infinity? As for the last line of hey. like's post I have a screen shot... http://www.jiangmao.plus.com/avatars/final_lines.jpg
  5. J

    Proving G is a Group: Jim's A-Level P6 Exam Struggle

    I was revising for my ALevel P6 exam the other day and I came up against a very tough question... I can do parts i and ii axa = x^-1, let x = e a^2 = e a = a^-1 for part ii axa = x^-1 axax = e axax(ax)^-1 = (ax)^-1 //ax and (ax)^-1 will cancel ax = (ax)^-1 but for part iii and...
Back
Top