macosxnerd101's Profile User Rating: ****-

Reputation: 10693 Legendary
Active Posts:
43,800 (20.53 per day)
27-December 08
Profile Views:
Last Active:
User is offline Today, 11:11 AM

Previous Fields

Who Cares
OS Preference:
Favorite Browser:
Favorite Processor:
Who Cares
Favorite Gaming Platform:
Who Cares
Your Car:
Dream Kudos:
Expert In:
Java, PHP, Data Structures, Economics

Latest Visitors

Icon   macosxnerd101 Please do not PM me with programming help requests.

Blog entries

Macosxnerd101's Blog > Discrete Calculus and Sums of Powers

Posted 03 August 2014

Have you ever wanted to know why \sum_{i=0}^{n} i = n(n+1)/2? The obvious proof is by induction, but it doesn't give us insight as to how we got the formula. I'll show you how to derive these formulas using discrete calculus.

We can actually derive this solution for any sum of powers using discrete calculus. We need a few...

Read Full Entry →

Macosxnerd101's Blog > Knowing When to Write Code and Knowing When to Do Math

Posted 31 July 2014

As some of you all may know, this summer I'm working doing summer research related to graph theory and dynamical systems over graphs. In a graph dynamical systems setting, each vertex has a state (such as a binary state) and an update function. The update function looks at the current state of the vertex and its neighbors and produces a new...

Read Full Entry →

Macosxnerd101's Blog > Counting Subsets and the Binomial Theorem

Posted 06 July 2013

The Power Set on a finite set S, denoted P(S), has 2|S| elements. Similarly enough, Sum_{i}^{n} C(n, i) = 2n...

Read Full Entry →

Macosxnerd101's Blog > The Importance of Multiplicative Functions

Posted 03 July 2013

I came across this thread today, where the OP was attempting to solve a problem regarding counting divisors. Here, the use of a multiplicative function provided means to optimize when counting divisors for larger numbers.

First, let's define two terms- multiplicative and completely multiplicative. A multiplicative function f...

Read Full Entry →

Macosxnerd101's Blog > Which Math Course(s) Should I Take?

Posted 09 June 2013

There are a lot of threads asking about math courses to take, so I figured it was time to put together a blog entry on this. I'm making the assumption that you, the reader, are some sort of an IT or CS major, so I'm starting at Calculus and moving my way up. This isn't a complete or comprehensive list of math courses commonly available...

Read Full Entry →

My Information

Member Title:
Self-Trained Economist
21 years old
January 5, 1993
Years Programming:
Programming Languages:
Expert: Java SE, PHP
Experienced: SQL, HTML/CSS (syntax yes, quality design no), XML, Android
Learning: Java ME, Erlang, Python

Contact Information

Website URL:
Website URL  http://


  • (21 Pages)
  • +
  • 1
  • 2
  • 3
  • Last »
  1. Photo

    macosxnerd101 Icon

    09 Jul 2014 - 14:54
    The next time I'm in New York, I'm totally going!
  2. Photo

    modi123_1 Icon

    09 Jul 2014 - 11:58
    Make sure to plan a weekend trip:
  3. Photo

    da1 Icon

    17 Jun 2014 - 12:11
    Thanks for the help last night.
  4. Photo

    macosxnerd101 Icon

    02 Jun 2014 - 23:27
    That's a neat find! Definitely worth knowing about. Thanks for sharing!
  5. Photo

    jon.kiparsky Icon

    02 Jun 2014 - 23:24
    came across this title, thought you might find it worth knowing about:
  6. Photo

    pbl Icon

    22 May 2014 - 13:26
    Ya really busy making the books in
  7. Photo

    macosxnerd101 Icon

    14 May 2014 - 10:31
    We looked at polyhedra and vertex configurations in graph theory towards the end. Neat stuff! Thanks for sharing!
  8. Photo

    modi123_1 Icon

    14 May 2014 - 09:35
    Fun visualizations of hyperbolic shapes.
    "Hexagonal Hyperbolic Honeycombs"
  9. Photo

    modi123_1 Icon

    24 Mar 2014 - 13:20
    NP hard problem? Graph theory? Colored balls?! what's not to love?
  10. Photo

    macosxnerd101 Icon

    12 Feb 2014 - 12:21
    Thanks, everyone!
  11. Photo

    Martyr2 Icon

    11 Feb 2014 - 11:53
    Congrats on the legendary status. Well deserved.
  12. Photo

    Dogstopper Icon

    10 Feb 2014 - 11:21
    Wow. 10k reputation! That's pretty amazing
  13. Photo

    belgarion262 Icon

    10 Feb 2014 - 09:49
    10,000 Rep, congrats :p
  14. Photo

    andrewsw Icon

    10 Feb 2014 - 02:48
    Wow, 10k?! Legend, wait for it, -ary!
  15. Photo

    tarmizi_adam2005 Icon

    09 Feb 2014 - 21:52
    Before your rep changes, i like your binary rep 10001 number.
  • (21 Pages)
  • +
  • 1
  • 2
  • 3
  • Last »