Archive for the ‘Uncategorized’ Category

Always Flow

Tuesday, March 27th, 2012
Tumblr_m0kcgjcbb41qm4heyo1_500

 

http://soma-hewn.posterous.com/always-flow

 

Herb Roasted Eggplant

Tuesday, March 27th, 2012
Tumblr_m174uyy1le1qkbiypo1_500

http://soma-hewn.posterous.com/herb-roasted-eggplant

 

The (My) Office

Friday, December 9th, 2011

I just realized that I have a thermostat. Cool!

 

Steve Jobs

Wednesday, October 5th, 2011

 

 

(more…)

 

4 labs and much software

Wednesday, May 25th, 2011

I have 4 computer labs to set up for the coming semester. I’ll be busy this summer.

 

Test post

Monday, May 23rd, 2011

I am doing 43 things.

 

Maximum Subsequence Sum

Wednesday, March 9th, 2011
Algorithms from Weiss
  1. maxSubSum1
    1. N = 5,000
      1. Sum[Sum[Sum[1, {k, i, j}], {j, i, 4999}], {i, 0, 4999}]
      2. T(N) ≈ 83337962547 ns
      3. 2.08458 x 1010
    2. 10,000
      1. tbd
      • 20,000
        1. tbd
        • 50,000
          1. tbd
        • maxSubSum2
          1. N = 5,000
            1. Sum[Sum[1, {j, i, 4999}], {i, 0, 4999}]
            2. T(N) ≈ 863884305 ns
        • maxSubSum3
        • maxSubSum4

         

        Legend:

        1. function/algorithm
          1. input size
            • Mathematica form
            • Run-time
            • Complexity (no. of operations)
         

        :)

        Sunday, March 6th, 2011

        I’m just saying.

         

        Photo Hunt – Esperanza Spalding

        Saturday, March 5th, 2011

        I’m looking for this full set of photos from this Esperanza Spalding photo-shoot. I want the largest available images.

        The filename for the few pictures that I’ve seen have the form 240EsperanzaSpaldingCourtesyofMontunoProductionsPhotoBySandrineLee. Most images that I’ve seen were without spaces; a few separated the terms.

         

        Math Bits

        Thursday, March 3rd, 2011

        Formulae

        Exponents

        xaxb

        Logarithms

        loga

        Series

        • \displaystyle\sum\limits_{i=1}^n i = \frac {n(n +1)} {2}
            Mathematica form: Sum[i, {i, 1, n}]
        • \displaystyle\sum\limits_{i=1}^n i^2 = \frac {n(n+1)(2n+1)} { 6}
            Mathematica form: Sum[i^2, {i, 1, n}]
        • \displaystyle\sum\limits_{i=1}^n i^3 =( \frac {n(n+1)} {2})^2
            Mathematica form: Sum[i^2, {i, 1, n}]
        • \displaystyle\sum\limits_{i=1}^n i^k
            Mathematica form:
        • else…

        Examples

        Exponents

        Logarithms

        Series

        • \displaystyle\sum\limits_{i=1}^n i = \frac {n(n +1)} {2}
          • \displaystyle\sum\limits_{i=1}^2 i = \frac {2(2 +1)} {2}
          • \displaystyle\sum\limits_{i=1}^3 i = \frac {3(3 +1)} {2}
          • \displaystyle\sum\limits_{i=1}^n i = \frac {n(n +1)} {2}
          • \displaystyle\sum\limits_{i=a_1}^{n+1} i = \frac {(n+1)((n+1) +a_1)} {2}