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Brain Teasers

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  • Real funny anileve.

    Don't take me for an idiot, please.



    R(vi+1) = R(vi) + oei R(di) = R(vi) + jR(vi)ffi|R(di)|k R(di).

    The initial value is R(v1) = R(1, 0) = q and R(vi) is integer valued and bounded by zero. Hence, the algorithm terminates after at most log(q) iterations. We obtain that t <= log(q) and that the number of vertices and direction vectors is polynomially bounded in the encoding length of C. This yields an efficient technique to store and to manage the complete basis of C.

    Theorem: Let C = cone \Gamma (1, 0), (p, q)\Delta be a 2-dimensional cone defined as above. Then the algorithm constructs in polynomial time vectors v1, . . . , vt+1, d1, . . . , dt and step lengths oe1 . . . , oet and the set

    H

    Z2(C) :=

    t[

    i=1 \Phi v

    i + oe di : oe = 0, . . . , oei - 1\Psi [ {(p, q)}

    is the basis of the cone C.

    Overview of the values generated by Algorithm for the cones C1 and C2.

    q p i vi R(vi) "i di R(di) oei = j R(v

    i)|

    R(di)| k

    7 4 1 (1, 0) 7 - (0, 1) -4 1

    2 (1, 1) 3 1 (1, 2) -1 3 3 (4, 7) 0 - - - -

    8 5 1 (1, 0) 8 - (0, 1) -5 1

    2 (1, 1) 3 1 (1, 2) -2 1 3 (2, 3) 1 1 (3, 5) -1 1 4 (5, 8) 0 - - - -


    I want to thank Dynamic progrmaning @ UofNM for development of the program that let me run the algo.

    and give credit to the team that calculated the Johnson Algorithm --a 24 bit encryption algorithm for linking protection.
    also from UofNM.


    and for your info pasamonster does know

    Now i wait for the answer for the problem that you posted.

    sorry it took me so long i had to type the whole thing.

    Comment


    • Here's one from way back...


      John is 5'11" tall. If he stands on a stool thats 1'7" , how tall will he be? If he sits down on the same stool, how tall will he be?

      Comment


      • Originally posted by PASAMONSTER ... and give credit to the team that calculated the Johnson Algorithm --a 24 bit encryption algorithm for linking protection.
        also from UofNM.
        Well, I'll be ...!!! And all this time I thought Johnson's algorithm was for solving the all-pairs-shortest path problem alla Floyd-Warshall and Bellman-Ford. I had no idea that the Dynamic Programming at UofNM used it to do crypto By the way, "Dynamic Programming" refers to a general class of algorithms where the above fall under (including Johnson's) If I remember correctly, Johnson uses a combination of Bellman-Ford and Dijkstra to sove for the shortest paths.

        But eve, by keeping with the spirit of the thread and the section it was in, I was hoping we'd try to solve that math one. Seems doable but not that trivial at the moment.
        Last edited by Sip; 03-03-2004, 11:57 AM.
        this post = teh win.

        Comment


        • heres a simple math one:


          Calculate the Discriminant and the number or roots for f(x)=0.

          If f(x)=x^2+4x-12.

          Comment


          • Originally posted by PASAMONSTER Here's one from way back...


            John is 5'11" tall. If he stands on a stool thats 1'7" , how tall will he be? If he sits down on the same stool, how tall will he be?
            If he stands up on the stool, he'll still be 5,11", if he sits down on the stool, he'll still be 5,11"

            Comment


            • Ayyyyy hayi xelka ehhhhh

              ov uni ehhh ovv uniiiiiiiii!

              Comment


              • Hey Seaphan.

                So thats what the deatails of it are. Hey you a mathematician or a computer programer?

                Comment


                • Originally posted by PASAMONSTER Hey Seaphan.

                  So thats what the deatails of it are. Hey you a mathematician or a computer programer?
                  Nah not a mathematician by any means. I've been known to do a few programs here and there (C/C++ is my language of choice) ... but algorithms and computery stuff and mostly discrete math would be what I consider my favorites.

                  Funny thing about Dijkstra and Johnsons mentioned above is that I was explaining it to my brother 2 nights ago who is getting ready to take the AP Computer Science test this year (highschool).
                  Last edited by Sip; 03-03-2004, 12:25 PM.
                  this post = teh win.

                  Comment


                  • Originally posted by PASAMONSTER Real funny anileve.

                    Don't take me for an idiot, please.
                    Oh Monster, that was not my intention at all. I was simply trying to elevate myself.

                    Originally posted by PASAMONSTER sorry it took me so long i had to type the whole thing.
                    That is ok, it's understandable. When I retype something from a book it also takes some time....

                    Comment


                    • I'm gonna shut the f up and 10..9..8..7..6.5.4.3.21...wuuusssaaaa.

                      Ok I'll still be waiting for your answer LOL muha ha ha h ha.

                      Elevate all you want, but still know your place, woman.

                      I don't wanna be the one to keep reminding and reminding you of it

                      Comment

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