Search found 13 matches

by nxcho
Thu Feb 20, 2014 12:37 am UTC
Forum: Individual XKCD Comic Threads
Topic: 1332: "Slippery Slope"
Replies: 119
Views: 22848

Re: 1332: "Slippery Slope"

"I know it is wrong to murder innocent children, but let's not go too far in the opposite direction."
by nxcho
Tue Aug 14, 2012 1:50 am UTC
Forum: Mathematics
Topic: Solving for a summation limit
Replies: 6
Views: 1396

Re: Solving for a summation limit

I'm a bit hungry and tired right now, so i might be pulling your legs here. Anyway, if you let d = 1/exp(c) you get: \log\left(\frac{(b - a)^N}{\prod_{k=1}^N(b + k)}\right) = -\log d \Rightarrow \log\left(\frac{(b - a)^N}{\prod_{k=1}^N(b + k)}\right) +...
by nxcho
Sat May 19, 2012 10:46 am UTC
Forum: Mathematics
Topic: Preparation for Real Analysis
Replies: 8
Views: 3414

Re: Preparation for Real Analysis

Understanding Analysis by Stephen Abbot is a very good book for self studies and the toc is suspiciously close to your course description.
A good textbook in combination with wikipedia and http://math.stackexchange.com will probably do the trick.
by nxcho
Sun Apr 08, 2012 5:14 pm UTC
Forum: Mathematics
Topic: Favorite math jokes
Replies: 1452
Views: 494218

Re: Favorite math jokes

Didn't see this one when i browsed through this thread:
Image

Edit: Hint: It's from the block buster movie yet to be done, Fourier Transformers.
by nxcho
Fri Apr 06, 2012 11:16 am UTC
Forum: Mathematics
Topic: Favorite number sequences?
Replies: 24
Views: 4407

Re: Favorite number sequences?

My favorite sequence in the sense that it is the one I use the most is clearly the sequence of natural numbers (a_0 = 0, a_n = a_(n-1)+1). It is very useful for example counting things and it is easy to remember. On the less trivial side of things I like sequences with a nice geometrical interpretat...
by nxcho
Tue Apr 03, 2012 9:58 am UTC
Forum: Comics/Graphic Novels
Topic: Would you kindly share your webcomic reading list?
Replies: 377
Views: 161833

Re: Would you kindly share your webcomic reading list?

One of my favorites right now is Rock Manlyfist (http://www.rockmanlyfist.com/). A sunday page style, a bit over the top, action adventure that has featured things like genetically engineered ninjas, mysterious land dwelling sharks and a giant robot among other things.
by nxcho
Tue Apr 03, 2012 9:18 am UTC
Forum: Mathematics
Topic: Mean of infinite sets
Replies: 10
Views: 2688

Re: Mean of infinite sets

Yes and No. The mean of a finite S set is m_S = \frac{\sum_{s\in S} s}{\sum_{s\in S} 1} . You can see that the denominator equals the number of elements in S. Let S_N = {-N,...,N} and let N tend to infinity. The nominator is zero and the denominator tends to infinity. All is fine. But if you decide ...
by nxcho
Tue Apr 03, 2012 8:20 am UTC
Forum: Religious Wars
Topic: Admit it. Your first OS is your favorite.
Replies: 81
Views: 50450

Re: Admit it. Your first OS is your favorite.

My first OS was win 3.11 and the first one I actually installed was DOS 6.<something>. By then windows xp was already out but i've found an old 486 in the basement wich I experimented with. Back in the days I was a huge windows fanboy but when I got my first own real computer, it took about three we...
by nxcho
Fri Mar 23, 2012 9:31 am UTC
Forum: Mathematics
Topic: A metric for mathematicians
Replies: 9
Views: 2604

Re: A metric for mathematicians

I've played in the same band as a guy with Erdös number 2. This means that d_{B \cup M}(\text{Me},\text{Erdös}) \leq 3 where d_A is the graph metric of graph A , M is the math article collaboration graph and B is the band collaboration graph. Since I'm pretty sure he hasn't played in a band ...
by nxcho
Fri Dec 17, 2010 2:05 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 0835: "Tree"
Replies: 126
Views: 30144

Re: 0835: "Tree"

I bet this strip is going up on the message boards in more than one computer science department.
by nxcho
Sat Oct 30, 2010 11:59 am UTC
Forum: Mathematics
Topic: knapsack-like problem
Replies: 5
Views: 1265

Re: knapsack-like problem

I don't know if I understand you correctly but you could probably use the integer property of the problem and relax it to a ordinary LP problem and solve it with simplex. Your problem can then be rewritten as \min_x c^T x -T \text{s.t } c^T x \geq T 0 \leq x_i \leq 1 Dynamical programming is also an...
by nxcho
Fri Oct 29, 2010 9:55 am UTC
Forum: Mathematics
Topic: Yo momma's so nerdy...
Replies: 40
Views: 7255

Re: Yo momma's so nerdy...

Yo momma's only she and n other passengers could fit in the bus on the trip to Hilberts hotel.
by nxcho
Mon Nov 30, 2009 7:46 pm UTC
Forum: Mathematics
Topic: Numerical Laplace Transform
Replies: 5
Views: 2438

Re: Numerical Laplace Transform

To understand the Laplace transform you can view it as a Fourier transform with a convergence factor e^{-\sigma t} ( s = \sigma + i\omega ). If you really want to view the Laplace transform of a function use fft in your numerical analysis software of choice on f(t)e^{-\sigma t} and plot it w...

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