Mathematics thread ~ all crazy people are invited

So why don't you make History thread ~ all crazy people are invited

Sorry, it was just a joke.
I once sad I don't understand how somebody can like history ... and I still don't ... I think I never will...

 

Chavs or are the most annoying people in the Universe.

Well said.

History pwns! It is very interesting. But I prefer naturale sciences.
Anyway, it is nice to see that Ana has some support now.

 

Why? History is a normal, but very important thing. It should be treated like all other subjects if you wish to be a well-educated person.

 

It should be treated like all other subjects if you wish to be a well-educated person.


Yeea , I know, that's my bigest problem... I have to study it even if I don't enjoy it.
But that's my problem isn't it?

 

Anyway, it is nice to see that Ana has some support now



That reminds me... Lord_of_all_Noldor, I haven't ask you the question we ask almost everyone that comes to this place. What do you think of the PT love story?

 

What does that have to do with Mathematics?
Oh, well, I like the love story. Both of the Prequels and classic Trilogy. A+P is kind of nicer. It reminds me on Beren & Luthien from the Silmarillion.

P.S. I adore theforce.net faces You have so much choice, unlike the a few other forums I posted to.

 

That reminds me... Lord_of_all_Noldor, I haven't ask you the question we ask almost everyone that comes to this place. What do you think of the PT love story?

 

Hmm... The way I remember Silmarillion, Beren didn't choke Luthien.

@Noldor; the thing that irritates me on BG forum is that we don't have icons.

 

The way I remember Silmarillion, Beren didn't choke Luthien

 

Here you go again.
They have just fallen under the bad circumstances. I'm glad that at least Lord_of_all_Noldor agrees with me. And the Star Wars love story is much better than most of todays love stories. Better "I'm hunted by a kiss..." then "Do me, b***h!". Isn't it?

 

I agree with you on that, lol.

 

Yeah, but it would help if they didn't have a limited vocabulary and were made to look like idiots by GL's crappy romance scripting.

I mean, Harrison Ford had to edit the script for TESB because it was so bad!

 

I mean, Harrison Ford had to edit the script for TESB because it was so bad!

Really?
Well, it isn't so surprising...

 

Well, he re-did all of Han's romance lines.

Like: "I know" was originally drafted as: "I love you too."

Harrison thought that it sounded nothing like Han, so he just said: "I Know" on set.

 

The 'love' line I liked is "I can't breathe". It is so foreshadowing:

[image=http://www.offthemarkcartoons.com/cartoons/1997-03-03.gif]

 

Cool picture; foreshadowing indeed...

Here, more math jokes. My roomate gave me papers with a lot of math and physics jokes.



Math is turning bad
"Psst, c'mere," said the shifty-eyed man wearing a long black trenchcoat, as he beckoned me off the rainy street into a damp dark alley. I followed.

"What are you selling?" I asked.

"Geometrical algebra drugs."

"Huh!?"

"Geometry drugs. Ya got your uppers, your downers, your sidewaysers, your inside-outers..."

"Stop right there," I interrupted. "I've never heard of inside-outers."

"Oh, man, you'll love 'em. Makes you feel like M.C. ever-lovin' Escher on a particularly weird day."

"Go on..."

"OK, your inside-outers, your arbitrary bilinear mappers, and here, heh, here are the best ones," he said, pulling out a large clear bottle of orange pills.

"What are those, then?" I asked.

"Givens transformers. They'll rotate you about more planes than you even knew existed."

"Sounds gross. What about those bilinear mappers?"

"There's a whole variety of them. Here's one you'll love -- they call it 'One Over Z' on the street. Take one of these little bad boys and you'll be on speaking terms with the Point at Infinity."



Two plus two is five
"First and above all he was a logician. At least thirty-five years of the half-century or so of his existence had been devoted exclusively to proving that two and two always equal four, except in unusual cases, where they equal three or five, as the case may be." -- Jacques Futrelle, "The Problem of Cell 13"

Most mathematicians are familiar with -- or have at least seen references in the literature to -- the equation 2 + 2 = 4. However, the less well known equation 2 + 2 = 5 also has a rich, complex history behind it. Like any other complex quantitiy, this history has a real part and an imaginary part; we shall deal exclusively with the latter here.

Many cultures, in their early mathematical development, discovered the equation 2 + 2 = 5. For example, consider the Bolb tribe, descended from the Incas of South America. The Bolbs counted by tying knots in ropes. They quickly realized that when a 2-knot rope is put together with another 2-knot rope, a 5-knot rope results.

Recent findings indicate that the Pythagorean Brotherhood discovered a proof that 2 + 2 = 5, but the proof never got written up. Contrary to what one might expect, the proof's nonappearance was not caused by a cover-up such as the Pythagoreans attempted with the irrationality of the square root of two. Rather, they simply could not pay for the necessary scribe service. They had lost their grant money due to the protests of an oxen-rights activist who objected to the Brotherhood's method of celebrating the discovery of theorems. Thus it was that only the equation 2 + 2 = 4 was used in Euclid's "Elements," and nothing more was heard of 2 + 2 = 5 for several centuries.

Around A.D. 1200 Leonardo of Pisa (Fibonacci) discovered that a few weeks after putting 2 male rabbits plus 2 female rabbits in the same cage, he ended up with considerably more than 4 rabbits. Fearing that too strong a challenge to the value 4 given in Euclid would meet with opposition, Leonardo conservatively stated, "2 + 2 is more like 5 than 4." Even this cautious rendition of his data was roundly condemned and earned Leonardo the nickname "Blockhead." By the way, his practice of underestimating the number of rabbits persisted; his celebrated model of rabbit populations had each birth consisting of only two babies, a gross underestimate if ever there was one.

Some 400 years later, the thread was picked up once more, this time by the French mathematicians. Descartes announced, "I think 2 + 2 = 5; therefore it does." However, others objected that his argument was somewhat less than totally rigorous. Apparently, Fermat had a more rigorous proof which was to appear as part of a book, but it and other material were cut by the editor so that the book could be printed with wider margins.

Between the fact that no definitive proof o

 

Interesting...

 

the 2nd one is a little bit long but funny (5-knot rope result -> too good)

So where could I find some arbitrary bilinear mappers?

 

Glad you liked it.

 

Euklid's problems:
[image=http://kme.truman.edu/images/euclid.jpg]


Discrimination of us geeks:
[image=http://www.vhswebdesign.com/studnt_sites/riemma_tolkmitt/images/math-jokes-are-never-funny.jpg]

Statistics; what a stupid subject:
[image=http://kme.truman.edu/images/stats.jpg]

This one is for Amon:
[image=http://www.ahajokes.com/cartoon/mathchem.gif]

Things that Sinus does:
[image=http://www.mathmate.net/joke/sin/tg96.jpg]

My favourite, though you have to know limes calculus to understand it:
[image=http://www.math.ucla.edu/~balabano/humor/soup.gif]

 

My favourite, though you have to know limes calculus to understand it:

I guess I have, cuz I don't understand a s...
But one day...

I guess it's great, the other ones are.

Look what have I found:

There once was a number named pi
Who frequently liked to get high.
All he did every day
Was sit in his room and play
With his imaginary friend named i.


There once was a number named e
Who took way too much LSD.
She thought she was great.
But that fact we must debate;
We know she wasn't greater than 3.


There once was a log named Lynn
Whose life was devoted to sin.
She came from a tree
Whose base was shaped like an e.
She's the most natural log I've seen.

Of course I don't understand the 3rd one... whatever.

 

That is geometricaly impossible
Poor Euklid...

This one is for Amon:
LOL, that has not yet happened to me.

@Simi, cool song.

Here's what I found:
[image=http://www4.stat.ncsu.edu/~bmasmith/images/all.gif]

 

Great smilies, Amarth. It would be fun to have them here on the boards.

Here, another few funny things:

One is negative one
Theorem: 1 = -1
Proof:
1 = sqrt(1) = sqrt(-1 * -1) = sqrt(-1) * sqrt(-1) = 1^ = -1

Also one can disprove the axiom that things equal to the same thing are equal to each other.

1 = sqrt(1)
-1 = sqrt(1)
Therefore 1 = -1

As an alternative method for solving:

Theorem: 1 = -1
Proof:
x=1
x^2=x
x^2-1=x-1
(x+1)(x-1)=(x-1)
(x+1)=(x-1)/(x-1)
x+1=1
x=0
0=1
=> 0/0=1/1=1

-----------------------------------------------------------------------

All numbers are equal
Theorem: All numbers are equal.
Proof: Choose arbitrary a and b, and let t = a + b. Then

a + b = t
(a + b)(a - b) = t(a - b)
a^2 - b^2 = ta - tb
a^2 - ta = b^2 - tb
a^2 - ta + (t^2)/4 = b^2 - tb + (t^2)/4
(a - t/2)^2 = (b - t/2)^2
a - t/2 = b - t/2
a = b

So all numbers are the same, and math is pointless.

-------------------------------------------------------------------------

One equal to one half
Theorem: 1 = 1/2:
Proof:

We can re-write the infinite series 1/(1*3) + 1/(3*5) + 1/(5*7) + 1/(7*9)
+...

as 1/2((1/1 - 1/3) + (1/3 - 1/5) + (1/5 - 1/7) + (1/7 - 1/9) + ... ).
All terms after 1/1 cancel, so that the sum is 1/2.

We can also re-write the series as (1/1 - 2/3) + (2/3 - 3/5) + (3/5 - 4/7)
+ (4/7 - 5/9) + ...

All terms after 1/1 cancel, so that the sum is 1.

Thus 1/2 = 1.


Proofs can be really silly, can't they?

 

Noooooo, all these years I have spent, and for what . . .
I think I should like fizika more...les crazy equasions (spell?) and stuff.

 

Those are cool pictures, but I must tell you, Disciple, that the 5th one isn't working.