Search found 63 matches

by themandotcom
Mon Dec 05, 2011 5:40 pm UTC
Forum: Mathematics
Topic: Putnam (aka halp!)
Replies: 17
Views: 2535

Re: Putnam (aka halp!)

For A4, its easy to see that for odd n it works: just put 0's for the diagonal and 1's for every other cell. Then I (almost) proved that if n works, then n + 1 cannot work. So basically add a row and a column to a n x n matrix that works. Now the last column from rows 1 to n must all be 0 (even), el...
by themandotcom
Fri Sep 23, 2011 4:44 pm UTC
Forum: School
Topic: The wall
Replies: 7
Views: 3225

Re: The wall

Are you past the point-of-no-return on your thesis? Why not start another thesis? Or maybe finish this thesis, then do another project? Or maybe just do the best you can with the material you seem force to have presented?
by themandotcom
Wed Sep 14, 2011 4:00 am UTC
Forum: Logic Puzzles
Topic: Interesting Math/Logic Puzzle
Replies: 4
Views: 2239

Re: Interesting Math/Logic Puzzle

Good job! :) How do you know?
by themandotcom
Wed Sep 14, 2011 2:41 am UTC
Forum: Logic Puzzles
Topic: Interesting Math/Logic Puzzle
Replies: 4
Views: 2239

Interesting Math/Logic Puzzle

A certain young person was asked about her birthday (this happened
around 1950). I was born on September 6, she said, but I celebrate my birthday
not every year, but every 1000 days. I find this much more convenient. My last
celebration was on August 1, 1948.
What year was she born?
by themandotcom
Sun Aug 28, 2011 4:06 pm UTC
Forum: School
Topic: Are you looked down on for not having a job in college?
Replies: 22
Views: 6032

Re: Are you looked down on for not having a job in college?

It obviously varies from person to person, but in my opinion its a resounding "yes." Did you work during High School? Ever hold a job? If not, its a very eye-opening experience to the tediums of life. I would suggest you get a job at a supermarket or something. It'll teach you about schedu...
by themandotcom
Sun Aug 07, 2011 3:01 pm UTC
Forum: Mathematics
Topic: Radians and calculus
Replies: 15
Views: 3329

Re: Radians and calculus

It's because radians are "dimensionless", whereas degrees have a unit.
by themandotcom
Sun Jul 10, 2011 10:31 pm UTC
Forum: Mathematics
Topic: How difficult is Discrete Mathematics?
Replies: 23
Views: 14099

Re: How difficult is Discrete Mathematics?

I actually go to binghamton!

discrete wasn't too bad, but i found calc 3 mad hard.
by themandotcom
Tue Jun 07, 2011 7:49 pm UTC
Forum: Mathematics
Topic: Does this function do anything interesting?
Replies: 3
Views: 869

Re: Does this function do anything interesting?

Observe what happens as you let epsilon go to 0 for [math]\frac{\delta(f, x, \epsilon)}{\epsilon}[/math]
by themandotcom
Tue Jun 07, 2011 2:19 am UTC
Forum: School
Topic: Wow, time flies
Replies: 6
Views: 3003

Re: Wow, time flies

I remember my 5th year of high school... and my 6th... and my 7th... the rest is kinda hazy...
by themandotcom
Sun Jun 05, 2011 3:34 pm UTC
Forum: Mathematics
Topic: LOCKED
Replies: 3
Views: 1436

Re: LOCKED

Oh. My. God. You're right!! You did find a new form of the mathematics! Guys, we should start a pool to give this guy "$1M" that he deserves for revolutionizing mathematics in an abstruse, non-comprehensible manner!!!!
by themandotcom
Sat May 28, 2011 1:23 pm UTC
Forum: Mathematics
Topic: alternative mathematics
Replies: 128
Views: 15253

Re: alternative mathematics

Can a mod please lock this thread/ban the OP? I think its time.
by themandotcom
Fri May 27, 2011 3:05 am UTC
Forum: Mathematics
Topic: Interesting Problems?
Replies: 33
Views: 4733

Re: Interesting Problems?

There is the Diophantine Equation: y^3 = x^2 + 2, which has only one solution, and that solution is easy enough to find. The interesting bit is that the proof that this is the only solution is quite tricky(I do not know the proof and am attempting to find it at present, so I do not wish to spoil it...
by themandotcom
Fri May 27, 2011 2:45 am UTC
Forum: Coding
Topic: Some game programming advice
Replies: 12
Views: 2253

Re: Some game programming advice

A*, or less generally Dijkstra's Algorithm, is the "best" way to find the minimum path when there are no non-negative weights.
by themandotcom
Thu May 26, 2011 7:18 pm UTC
Forum: Mathematics
Topic: alternative mathematics
Replies: 128
Views: 15253

Re: alternative mathematics

33 (0,1,2,3, +33 (0,1,2,3,4,5) =x (0,1,2,3,4,5,6,7) I see that you do not think mathematically and I will solve the task I have given you.here are given the numbers of different scales of natural numbers, converting them to the 33 (0,1,2,3) =17 (0,1,2,3,4,5,6,7) 33 (0,1,2,3,4,5) =25 (0,1,2,3,4,5,6,...
by themandotcom
Wed May 25, 2011 1:52 pm UTC
Forum: Mathematics
Topic: alternative mathematics
Replies: 128
Views: 15253

Re: alternative mathematics

Every single post of yours makes *absolutely* *no* *sense*, kumarevo. We can't read your mind, so make sensical graphics & arguments, or please stop posting.
by themandotcom
Tue May 24, 2011 7:30 pm UTC
Forum: Mathematics
Topic: Recently awakened love for mathematics. How do I pursue?
Replies: 4
Views: 1091

Re: Recently awakened love for mathematics. How do I pursue?

Become an expert in a field! Maybe you're into Number Theory, so read up all about it, look at unsolved problems within that field, and maybe attempt to solve it, and look at other failed solutions.
by themandotcom
Mon May 23, 2011 8:35 pm UTC
Forum: Mathematics
Topic: alternative mathematics
Replies: 128
Views: 15253

Re: alternative mathematics

I still have no idea what this guy is even driving at. Did he just create a line?
by themandotcom
Sun May 22, 2011 6:29 pm UTC
Forum: Mathematics
Topic: How to recognize an undervalued stock
Replies: 8
Views: 1719

Re: How to recognize an undervalued stock

Thanks for the responses everyone!
by themandotcom
Fri May 20, 2011 3:05 pm UTC
Forum: Computer Science
Topic: Mnemonic device for little/big-endian; or Fix My Brain
Replies: 16
Views: 5676

Re: Mnemonic device for little/big-endian; or Fix My Brain

Moose Hole wrote:I had the same problem with, "Righty tighty, lefty loosey." Does the top of the screw go right, or the bottom? Clockwise and counterclockwise make a lot more sense for screws.

How often are you turning screws upside down? lol
by themandotcom
Wed May 18, 2011 4:00 pm UTC
Forum: Computer Science
Topic: So I tried CPU design
Replies: 5
Views: 3417

Re: So I tried CPU design

Whats the point of having two branching instructions? BNA = subtract from the program counter and BPA = add from the program counter?
by themandotcom
Wed May 18, 2011 3:49 pm UTC
Forum: Mathematics
Topic: How to recognize an undervalued stock
Replies: 8
Views: 1719

How to recognize an undervalued stock

This seems like the most relevant board to post this in... I'm a current CS/Math student at college, and I was thinking about getting in to the stock market, so I am kinda novice. I was thinking of trying to invest by buying undervalued stocks. But how does one come to the conclusion that a stock is...
by themandotcom
Fri May 06, 2011 4:11 pm UTC
Forum: School
Topic: AP Physics on Monday!
Replies: 37
Views: 5856

Re: AP Physics on Monday!

Good luck fickle high school students! I remember being super stressed for these AP exams, but don't worry - it won't really matter much. And the top schools don't even take AP credits! ><
by themandotcom
Fri May 06, 2011 4:09 pm UTC
Forum: Coding
Topic: Building an ALU
Replies: 11
Views: 3214

Re: Building an ALU

Also you should look up Carry Look-Ahead adder, its the best method to add two binary digits of size N.
by themandotcom
Tue Apr 19, 2011 9:36 pm UTC
Forum: Computer Science
Topic: A digital currency with no judging authorities
Replies: 19
Views: 3218

Re: A digital currency with no judging authorities

I'm a little confused, maybe you can explain the premise behind this whole thing to the uninitiated? So the idea is that you get paid in a currency, and have the ability to lend out and borrow money from anyone, without the use of a bank? If that's the case, how do I grow my money? In the current ma...
by themandotcom
Sun Apr 10, 2011 4:33 pm UTC
Forum: Coding
Topic: Java Programming Question
Replies: 4
Views: 1064

Java Programming Question

Hey guys,
I've been looking around and can't seem to find the answer to this: is it possible to create a Java applet which will allow the user to use a "paint" like program, and then save it as an image file?
by themandotcom
Sun Mar 27, 2011 3:38 pm UTC
Forum: Mathematics
Topic: Google/Microsoft Interview Question
Replies: 4
Views: 1315

Google/Microsoft Interview Question

I was reading potential interview questions for Google & Microsoft, and I came across an interesting one: "Why are manhole covers round?" My answer was because circles are the only shape that can't fall down a hole of itself. Is it true that circles are unique in this property, or do t...
by themandotcom
Thu Dec 16, 2010 6:13 pm UTC
Forum: News & Articles
Topic: Britain increases tuition, met with violent protests
Replies: 148
Views: 12958

Re: Britain increases tuition, met with violent protests

Does this 9000 pound fee cover both "tuition" and "room and board"?
by themandotcom
Thu Dec 16, 2010 4:48 am UTC
Forum: News & Articles
Topic: Federal Judge rules parts of The Affordable Care Act unconstitutional
Replies: 90
Views: 8064

Re: Federal Judge rules parts of The Affordable Care Act unconstitutional

I don't get why people are so up in arms over being forced to have healthcare. If everyone has healthcare, costs go down. It's simple economics. Erm. How, exactly? I don't believe I've ever read anything suggesting this would actually be a cost reduction measure in any sense. In addition to what th...
by themandotcom
Thu Dec 16, 2010 1:31 am UTC
Forum: News & Articles
Topic: Federal Judge rules parts of The Affordable Care Act unconstitutional
Replies: 90
Views: 8064

Re: Federal Judge rules parts of The Affordable Care Act unconstitutional

I don't get why people are so up in arms over being forced to have healthcare. If everyone has healthcare, costs go down. It's simple economics. Similarly, if a non-insured person gets sick and doesn't have the money to pick up the tab, the taxpayer is forced to pick up the bill.
by themandotcom
Sun Nov 14, 2010 9:54 pm UTC
Forum: Mathematics
Topic: Sum of factors.
Replies: 7
Views: 1277

Re: Sum of factors.

Ivor Zozz wrote:A question came to me while reading the OP: How would I prove that pn has exactly n-1 nontrivial factors (with p being prime, as above)?


if n=p^n
then n=p^n-k*p^k
by themandotcom
Tue Aug 26, 2008 2:26 am UTC
Forum: Mathematics
Topic: Question on Elliptic Curves
Replies: 2
Views: 996

Question on Elliptic Curves

Hello all, Recently I got the Book Rational Points on Elliptic Curves, and I came across something I didn't understand. The author claimes that the curves x^3 + y ^3= 9 has a "one-to-one correspondece" to the rational points on Y^2 = X^3 - 48? How does he get this? Because earlier in the b...
by themandotcom
Fri Jul 25, 2008 3:30 pm UTC
Forum: Mathematics
Topic: Research Ideas
Replies: 13
Views: 1951

Re: Research Ideas

Thank you guys so much for your replies!! Terry Tao's blog is really good. I am indeed in high school, and your questions made me realize that even I don't know what to do o_o. So I'm asking a friend who takes Math Research at my school what I'm supposed to be doing. haha, I would've been screwed fo...
by themandotcom
Mon Jul 21, 2008 3:09 am UTC
Forum: Mathematics
Topic: Research Ideas
Replies: 13
Views: 1951

Research Ideas

Hey guys, I'm doing Math Research at my school next year, and I'm stuck to find a project! At first, I extensively studied the Collatz Conjecture, but I got nowhere so I gave up. Then I went to Euler Bricks, and again, I got stuck. So I'm wondering if any of you can suggest a good problem for me to ...
by themandotcom
Wed Jul 02, 2008 4:44 pm UTC
Forum: Mathematics
Topic: infinity
Replies: 91
Views: 10372

Re: infinity

(Sorry to digress) I think that natural numbers exist in the nature, without human's minds, as they describe real objects extremely well.

As that one guy once said, "God invented the integers, the rest is up to the work of man"
by themandotcom
Mon Jun 30, 2008 11:52 pm UTC
Forum: Mathematics
Topic: Periodic Interpolation
Replies: 2
Views: 1062

Periodic Interpolation

Hi guys, I've checked around the internets and my calc textbook, but I couldn't find the answer to this question, so I shall ask it here. Say I have a function f(x) where f(1)=1 f(2)=4 f(3)=2 and f(4)=1 again and the cycle repeats like that. Is there anyway through some kind of sine curve I can inte...
by themandotcom
Tue Jun 03, 2008 11:18 pm UTC
Forum: Mathematics
Topic: Cryptography
Replies: 43
Views: 9402

Re: Cryptography

haha, I was just reading about this ARG on unfiction this morning, it costs a lot, though
by themandotcom
Sat May 03, 2008 10:50 pm UTC
Forum: Mathematics
Topic: Mathematical Economics
Replies: 8
Views: 1541

Re: Mathematical Economics

mathmagic wrote:
themandotcom wrote: So I researched some stuff on the internet, and I really can't find anything good(even Wikipedia :O)


LIES

http://en.wikipedia.org/wiki/Mathematical_economics


Yeah, but it doesn't say anything :(, and all papers are through Science Direct, which my school doesn't have a subscription to :(
by themandotcom
Fri May 02, 2008 9:16 pm UTC
Forum: Mathematics
Topic: Mathematical Economics
Replies: 8
Views: 1541

Mathematical Economics

I was reading my calculus text (Thomas, I believe), and they do some cool things with calculus to prove some things in economics. So I researched some stuff on the internet, and I really can't find anything good(even Wikipedia :O) So, does anyone have any cool sights/theorems to show me? Thanks so m...
by themandotcom
Sat Mar 01, 2008 8:30 pm UTC
Forum: Mathematics
Topic: AMC 12(B)
Replies: 10
Views: 1888

AMC 12(B)

Did anyone take it? If so, how'd you do? I think I did really well, compared to my peers, but I def didn't get into the AIME :(. Anyways, I have a question: Define f(z)=(4+i)z 2 +(alpha)z+(gamma) where alpha and gamma are complex numbers If f(1) and f(i) are real, what is the smallest value from |(a...

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