Man memorizes 100,000 digits of pi.....

hungryduck

Tank
Joined
Dec 14, 2004
Messages
2,267
Reaction score
1
http://search.japantimes.co.jp/print/fl20061217x1.html

In fact, so marginal is the perceived importance of pi -- a number many remember from school only as "somewhere around 3.14, or roughly 22 divided by 7," but which is actually the circumference of a circle divided by its diameter -- that many schools in Japan even teach the value of pi as 3 to simplify the concept amid the plethora of math formulas, grammar rules and history facts that students must cram.

But for Akira Haraguchi, pi is more than just a vague figure or a mathematical concept -- like zero -- that proves itself vital to many calculations. In fact, he says the infinite series of numbers, which computers have calculated to more than 1 trillion digits without detecting any repetition or pattern, provides him with the source of epic novels and poems -- and even the answers to his lifelong spiritual quest.

Otherwise, why would anyone want to try to set a world record in reciting 100,000 digits of pi? That, however, is exactly what this 61-year-old retired engineer from Chiba Prefecture set out to do -- and accomplished -- during a 16 1/2-hour event in Tokyo in October.
Crazy.....this guy has quite a memory. The method he used to memorize all those numbers is intriguing though:

So how does he do it? He has come up with his own way of assigning kana characters to each number. The number 0, for example, can be read as o, ra, ri, ru, re, ro, wo, on or oh; 1 can be a, i, u, e, hi, bi, pi, an, ah, hy, hyan, bya, or byan. The list goes on up to 9.

Combining these characters, he has created a myriad of stories and poems, including a story about the legendary 12th-century hero Minamoto no Yoshitsune and his sidekick Benkei, who was a Buddhist monk. In his January 2006 book titled "Bucchigiri Sekai Kiroku Hojisha no Kiokujutu (The Memorization Skills of a Whopping World-record Holder)," he explains that the first 15 digits of pi, which are 3.14159265358979, can be memorized as "saishi ikokuni mukosan kowakunaku" -- which roughly translates as: "The wife and children have gone abroad; the husband is not scared."
Very cool.
 

63

Newbie
Joined
Jan 16, 2004
Messages
8,959
Reaction score
0
So what. I can count to 1 trillion.
 

Tyguy

Space Core
Joined
Aug 22, 2004
Messages
7,993
Reaction score
11
and i cant even remember where i put my keys
 

Kula Meenur

Newbie
Joined
Dec 17, 2006
Messages
5,760
Reaction score
2
lol... wonder wat his job is...

...calulating the losses of mac perhaps?

......D:
 

tehsolace

Newbie
Joined
Oct 3, 2003
Messages
1,473
Reaction score
0
Bleh! I can memorize 100,000 digits of .999
Only 100,000 huh?

"zero point nine nine nine nine nine nine nine nine..."

*100,000 digits later*

"... nine nine nine... um... uhhh... eight? sh*t i forgot what comes next..."
 

Raziaar

I Hate Custom Titles
Joined
Sep 13, 2003
Messages
29,758
Reaction score
132
There's one autistic savant who can do it easily too. He just kept going and he was tested by some university people or whatnot. <shrugs>

Nothing special in my world, where math only factors as a matter of division, multiplication, addition and subtraction. :cheese:
 
Joined
Sep 28, 2003
Messages
6,356
Reaction score
0
Hasn't this man ever watched pi?! Didn't his mother ever tell him not to stare at the sun?! :dork:
 

Solaris

Party Escort Bot
Joined
Feb 11, 2005
Messages
10,323
Reaction score
4
Quite.

I was amazed the even mecha himself got that wrong.
 

The Monkey

The Freeman
Joined
Jun 5, 2004
Messages
16,317
Reaction score
14
Lol. Good one. This thread will now explode amid a mass of blood-curdling screams and writhing tentacles of math teachers. You have doomed us all.
Don't worry. No one can seriously believe that 0.999... doesn't equal 1 anymore. Not after all the proof we laid forward.
 

tehsolace

Newbie
Joined
Oct 3, 2003
Messages
1,473
Reaction score
0
If you take any sort of Calculus class, you'd understand the mathematics it takes to truly prove 0.9999 repeating equals 1. Otherwise, you can just rely on the fractions way of proving it...

1/3 = 0.3333 repeating
1/3 times 3 = 0.33333 times 3
3/3 = 0.9999 repeating
And 3/3 = 1, so 0.9999 repeating must equal 1.
 

Solaris

Party Escort Bot
Joined
Feb 11, 2005
Messages
10,323
Reaction score
4
The fraction way is a valid proof anyway.
 

Pauly

Tank
Joined
Sep 23, 2003
Messages
2,633
Reaction score
0
I use the derren brown style to remember extremely long numbers... like credit card numbers :D
Peg system works great:
0 - z/s
1- L
2 - n
3 - m
4- r
5 - f/v
6 - b/p
7- t
8- ch//sh/j
9 - g

Looks bizzare but once you memorize that you can use it to easily remember long numbers and such. In derren's book he teaches you a 24 digit number and you will remember all of the digits within just a few minutes of reading how to do his method. It's amazing - I can still remember the digits after I read that chapter 3 weeks ago.
 
Joined
Sep 22, 2003
Messages
3,756
Reaction score
0
I use the derren brown style to remember extremely long numbers... like credit card numbers :D
Peg system works great:
0 - z/s
1- L
2 - n
3 - m
4- r
5 - f/v
6 - b/p
7- t
8- ch//sh/j
9 - g

Looks bizzare but once you memorize that you can use it to easily remember long numbers and such. In derren's book he teaches you a 24 digit number and you will remember all of the digits within just a few minutes of reading how to do his method. It's amazing - I can still remember the digits after I read that chapter 3 weeks ago.
wut...?

I dont understand D:
 

CyberPitz

Party Escort Bot
Joined
Aug 23, 2004
Messages
24,818
Reaction score
7
What if it's 1234?

Lnmr! That would confused the piss outta me.
 

Uriel

Tank
Joined
Jul 26, 2005
Messages
3,699
Reaction score
0
>< NUFF WITH THE MATH JARGEN!

That Chinese man has an incredible memory btw. Sure it doesn't serve society much good, but good heck!
 

Raziaar

I Hate Custom Titles
Joined
Sep 13, 2003
Messages
29,758
Reaction score
132
Don't worry. No one can seriously believe that 0.999... doesn't equal 1 anymore. Not after all the proof we laid forward.
I don't believe it does.

Just because a number is infinitely close to one, doesn't make it one.

You all were going on the fact that one minus .000...1 or whatever equals one, therefore .999 = one, but it doesn't work that way. You say you throw away the one in the subtraction because you are not allowed to add on a digit to the end of infinity. Well, that's exactly what happens if you try to add on a .000...1 to the .999... You can't add a point one in whatever point because you say you cannot modify something at the end of infinity.

Therefore using your rule, 1 minus .000...1 equals one, because it's 1 minus 0... as the 1 can't exist... but .999... with a 1 added to the last nine equals .999... because you can't add the 1 at the end, according to your rule. So the only way it could ever equal one, is if you rounded up.
 

The Brick

Newbie
Joined
Oct 2, 2003
Messages
5,376
Reaction score
0
Raziaar stop trolling. No one would seriously say that much crap in one post.
 

Geogaddi

Newbie
Joined
Jun 1, 2006
Messages
3,205
Reaction score
0
I don't believe it does.

Just because a number is infinitely close to one, doesn't make it one.

You all were going on the fact that one minus .000...1 or whatever equals one, therefore .999 = one, but it doesn't work that way. You say you throw away the one in the subtraction because you are not allowed to add on a digit to the end of infinity. Well, that's exactly what happens if you try to add on a .000...1 to the .999... You can't add a point one in whatever point because you say you cannot modify something at the end of infinity.

Therefore using your rule, 1 minus .000...1 equals one, because it's 1 minus 0... as the 1 can't exist... but .999... with a 1 added to the last nine equals .999... because you can't add the 1 at the end, according to your rule. So the only way it could ever equal one, is if you rounded up.
Bwah? That makes no sense.
 

Raziaar

I Hate Custom Titles
Joined
Sep 13, 2003
Messages
29,758
Reaction score
132
You guys were saying that the only reason .999... = 1 is because if you take 1=.000... with a 1 at the end, it equals one. You guys said it has to be one, because you can't add or subtract a number from infinity. So why doesn't that rule also work with the addition of an infinitely small addition of a 1 at the end of the .999... example? You said you can't add a number to infinity, so why are you then able to assume .999... is equal to one just because 1 - .000...1 is equal to one.

Am I missing the point here? Are you guys saying a rule exists in one example, but not in the other?


But... I've always known I'm an idiot in the mathematics world... which is why I'm sitting here making forum posts, and you're all out there being high paid math professors, or solving the secrets of the universe using the .999... example.
 

The Brick

Newbie
Joined
Oct 2, 2003
Messages
5,376
Reaction score
0
Are you a ****ing idiot? Yes you are. You can't put a one after something that doesn't end. 0.999...1 does NOT exist.

I know you're just trying to bring up the discussion again by posting the same stupid crap as the first threads. Shut up, you're gonna get infractions.
 

AKIRA

Tank
Joined
Feb 6, 2006
Messages
3,000
Reaction score
2
jeeze calm down math geek ^^^

are you going to go to the math club and show that post so you can all laugh together in your underground lair and drink prune juice?
 

Raziaar

I Hate Custom Titles
Joined
Sep 13, 2003
Messages
29,758
Reaction score
132
Are you a ****ing idiot? Yes you are. You can't put a one after something that doesn't end. 0.999...1 does NOT exist.
Exactly what I was saying. I've only been going by the information you guys have been giving me on the reason it does equal one. The fractions example given makes much more sense than the other explanation that one of you guys used to validate in the subtraction aspect but not in the addition aspect.


I know you're just trying to bring up the discussion again by posting the same stupid crap as the first threads. Shut up, you're gonna get infractions.
I didn't bring up the discussion in this thread you fool. And who are you to say I'm going to get infractions? Are you a moderator? You're the one being an asshole with your pre-emptive insults.
 

depth9000

Newbie
Joined
Dec 19, 2006
Messages
149
Reaction score
0
That's a very good mnemonic for "memorizing" the first 100,000 digits of pi. Eh, he didn't really memorize them did he? He just memorized a system that would allow him to recite the 100,000 first digits of pi...


The Brick said:
You can't put a one after something that doesn't end. 0.999...1 does NOT exist.
But you can put the 0. on the left side, the 1 on the right side, and an "infinite" number of nines in the middle. Think about this mental construction for a sec...
 

The Brick

Newbie
Joined
Oct 2, 2003
Messages
5,376
Reaction score
0
:O Holy jeez I'm going to bed and probably find this thread locked tomorrow morning.
 

Solaris

Party Escort Bot
Joined
Feb 11, 2005
Messages
10,323
Reaction score
4
razziar 0.000...1 does not exist.

People have supplied at least 10 different proofs for 0.999...=1 in these forums, its mathematically absurd to disagree after seeing just one proof.

I'm going to guide you through it:

First lets establish 1/3=0.333...
Put it in your calculator, or do it yourself, keep going for as long as you're sure you'll get 3's ever time.

Okay, so if you agree that 1/3=0.333...
Then time both sides by 3 to get:
3/3=0.999...

And what does 3/3 equal?

1

so

0.999...=3/3=1
0.999...=1
 

Raziaar

I Hate Custom Titles
Joined
Sep 13, 2003
Messages
29,758
Reaction score
132
As I said, the fraction example makes much more sense than the one I was going off of, that somebody else provided. As the way they were doing it, it wouldn't work since they were applying a rule that didn't allow you to modify the end of the infinity, yet with the other one to explain their point, they were allowing themselves to modify the end of infinity.
 
Top