Happy Pi Day!!!

first post 100 digits and thank ya... same to you

Posted by: The madman who makes people fly aka Captain SS Wan on March 14, 2007

26 digits...
Not horrible =P
It's not Pi day yet where I live!

Posted by: Karin on March 14, 2007

3 digits (shame!!!!).

Anyways, Happy Pi Day and Happy B'day to Albert Einstein!

Posted by: Basant on March 14, 2007

Awesome I know about 5 digits. Our math classes usually celebrate by eating round stuff; pizza, cupcakes, pie... etc. I can't believe some people know thousands of digits. There was a news story about this autistic guy that taught himself to overcome his autism so now hes basically just the sevant part and can remember loads of stuff he reads so i think he knows pi to somewhere in the tens of thousands.

Posted by: Nick on March 14, 2007

I am so ready for pi day! 3 more hours here on teh west coast but I've already got my black Pi shirt (that I bought in the MIT museum) set out for tomorrow!

I've got pi to 21 digits. . .

Posted by: Snively on March 14, 2007

At my school we have Pi(e) eating contests and we get to throw Pi(e)s at teachers, counselors, and administrators. In Geometry they get to take in any food that is round and they do calculations on it before they eat it (How I miss Pi Day in geometry! The calculus teacher is somehow too good for it Pi Day.). My favorite part of pie day, however, are the hallways magically developing polka-dots. We also celebrate Mole day, but that is somehow not as much fun.

Posted by: Mariah on March 14, 2007

my friends and I are bringing pies into our physics class..can you believe none of them have ever heard of pi day?! We've had a countdown going for months, and we're even announcing it on the morning announcements! woooo

Posted by: Nicole on March 14, 2007

i know 9 digits because that's how many it shows on my calculator. i have a friend who has pi on a piece of paper taped onto the back of her planner, and she tries to memorize it during chapel.

i'm really depressed this year because we don't have math tomorrow (it's still the 13th here), though we just had a test today on taylor and mclaurin series, yay!

Posted by: jenn on March 14, 2007

Anouncements! Brilliant! I'll make sure to do that tomorrow. . .

"Good morning Sprague High School, these are your daily anouncements for Wednesday, March 14th, a regular Pi Day schedule."

Posted by: Snively on March 14, 2007

We're on spring break right now, so we celebrated pi day last friday, our calculus teacher made sure we made a big deal out of it (we had shirts, competitions, and lots, lots of food).

Posted by: JL on March 14, 2007

The math team at our high school makes square pies on pi day.

Posted by: KT on March 14, 2007

About the sevant guy who had autism - It took him about 5 hours to recite all the digits of pi that he knew. He kept going at a steady pace for the whole 5 (possibly 5+) hours without skipping a beat.

Posted by: JJP on March 14, 2007

Same to you man!
How am I going to celebrate this day? Well, I'm going to fiddle with some math today... :-D

Boy, one has to think; where would we be if it weren't for our little friend π!!

We all love you π!

Posted by: Ashesh on March 14, 2007

I know up to that same digit, Bryan. Creepy.

I usually don't do anything but tell people it's Pi Day and be a general math nerd. But we have math team so it's going to be exciting times!

Posted by: Jenny on March 14, 2007

3.14 r there ne digit beside this

Posted by: bhushan on March 14, 2007

If we ( vancouverians ) pull our clocks a little bit ahead then we can say that a full soccer field of persians ( Iranians ) celebrate the PI day with songs and fire. I just came back to my home from there. It was our Chaharshanbeh Suri ( Red Wednesday ). I don't know if anyone celebrates this tradition in mIT campus. MAybe you can find out, Bryan.

Well, lets celebrate this specail day by putting some time for measuring Pi by our rulers and compasses and see how precise approximation can we make of.

Posted by: Saman on March 14, 2007

check here about this old tradition " Chaharshanbe Suri ".

Posted by: Saman on March 14, 2007

We're bringing pies in and I think some people are baking square pies for calculus =)

Posted by: Kristina on March 14, 2007

haha,i can remember 100 digits....

Posted by: JJ on March 14, 2007

I remember this "pi-day" because of my AP Calculus teacher in my junior year. She always brought pies to her class in order to share them with students while celebrating this day. I should visit her today!!

Posted by: Sea on March 14, 2007

By recollecting the historic moments and personalities involved with pi and being awestruck at the beauty of the circle/sphere which finally leads to the infinate universe.

Posted by: Pradeep on March 14, 2007

happy pi day! i have a few hundred digits of pi on my t-shirt at the moment :D it was made just for this day

i'll post a picture on my blog as soon as my camera gets back from romania :p have fun

Posted by: Sh1fty on March 14, 2007

I completely forgot it was Pi day today!!

But I knew it was White Day in Japan .__.

Posted by: Reg on March 14, 2007

We don't celebrate Pi day here. But romance is in the air.

Posted by: Guyomar on March 14, 2007

I remember 50 digits :(

Posted by: Araniel Ithildin on March 14, 2007

The answer to Pi is in 104°.

More clues can be found in Boston.

Posted by: Talking Mora on March 14, 2007

It's White Day in Japan? I thought that was just in South Korea. A bunch of girls at my school have been pestering guys to buy them candy or chocolate all day. I'm not much of a math geek, but I'd LOVE to celebrate Pi day.

Posted by: 0 on March 14, 2007

yes my girlfriend said so.... hope you remember her!

Posted by: The madman who makes people fly aka Captain SS Wan on March 14, 2007

Its also Einstein's birthday, so everyone in my physics class made a cake with his face on it... pretty exciting.

Posted by: Amanda on March 14, 2007

Happy Pi day everyone! I know 13 digits of Pi, but maybe today I'll make it a point to learn up to digit 20.

Posted by: Adam S. on March 14, 2007

π π π π π π π π π π π π π π π π π π π π π π π π π

Posted by: 0 on March 14, 2007

I know 4 digits (shame, too). By the way, in my part of the world theres no such thing as pi day. That's probably why I know only 4! :(

Posted by: Hopeful on March 14, 2007

I feel silly, memorizing pi from the number above. I've gotten to 3.141592653589793238 so far.

Posted by: Susan on March 14, 2007

3.1415926535897932384626432795

i think i missed something somewhere

Posted by: anonymous on March 14, 2007

pi can also be the probability for a population

Posted by: dale on March 14, 2007

we are going to have a contest in my math class on who can memorize the most numbers in pi, so far i've only gotten to 13, not good =(

Posted by: Monica on March 14, 2007

I'm eating Pie right now in my Calc II class.

...Just got blueberry on the mac. (It might be for the better!)

Posted by: AJ on March 14, 2007

Also, PI is exactly 3.

Posted by: AJ on March 14, 2007

Im celebrating it by proving 1+e^ipi=0. Im also scheduled to give a lecture to all who will listen at the math club (considering im the president)

I know pi to about 46 digits. However, i prefer to get into the spirit of math, thus... i dont memorize, i derive! so i derive pi when needed, and have gotten it up to 1532 digits by hand!!!!

all hail math nerds!

Im curently writing ablog on it too, come on over and have a look later today! and if you have any suggestions, email me @ Lendz123@math.com

symple, Lendz, my name, the first three numbers, at math.com... who could wish for a better email... well... @ MIT.com sounds better... actually... wouldnt mind that one...

Posted by: Lendz on March 14, 2007

Very cool video on Pi !

http://www.videokarma.com/display/ShowJournal?moduleId=769550&categoryId=87448

Posted by: mike on March 14, 2007

sorry, forgot to post the link,

I actually found that it was albert einstiens birthday two days ago, and in my jappanese class i was absolutely invigorated to here it was white day... sad though... the professor brought marshmellows, i highly dislike them... so i gave mine to a random girl... dont think that was a wize decision now...

So, technichally... pi day begins (IF I were to be technichal)

on march (3) 14, at the first (1) hour of the (5) minute of the (2) second

so as of march 14, at 1:05.02 Pi day officially began!!!!

(the weeks were skipped, so that kind of screws this alittle over...)

NOW TO THE FUTURE!

what do you think the parties will look like on march 14, in the year 15926?

TO THE PAST!

how do you think the romans and surviving greeks partied on march 14, 159 at 2:06.05 AM?

Posted by: Lendz on March 14, 2007

Happy Pi day everyone!! In physics, my teacher played the Pi song; it's a song that repeats the digits of Pi over and over.

Posted by: Awet on March 14, 2007

http://www.3.14159265358979323846264338327950288419716939937510.com/

very interesting when i found this... kind of like www.physics.com... i got a kick out of that one too...

Posted by: 0 on March 14, 2007

Last year, I could do 1200. This year, I'd be happy to pull out the first 600...

Ah, pi...

Posted by: Timur Sahin on March 14, 2007

For all those yearning hopefuls who wish to memorize just a fraction of the endless decimal places of pi, there's a nifty song.

(Warning: it gets a little annoying after the first one hundred digits)

Posted by: Carlos R. on March 14, 2007

For all those yearning hopefuls who wish to memorize just a fraction of the endless decimal places of pi, there's a nifty song.

(Warning: it gets a little annoying after the first one hundred digits)

Posted by: Carlos R. on March 14, 2007

go to http://pi.ytmnd.com/ for the song

Posted by: Carlos R. on March 14, 2007

How about Phi? Its a bit more than half of Pi.

Oh, and Happy B'day to that brainy guy with the weird hairstyle who was born a hundred and ten years ago. And yes, his field equations are a bit difficult to understand.

AJ Singh

Posted by: AJ Singh on March 14, 2007

By skipping calculus! haha

I only know 3 digits ftl

Posted by: Eileen on March 14, 2007

"Now I know a super utterance to assist maths."

Mnemonics!

Posted by: Sid on March 14, 2007

I forgot. Someone asked me about pi and we talked for a long while, but I didn't know today's date!
I'll try to memorize pi today, but I only know the calculator's display.
Here's an app that converts the first ten thousand digits of pi into a musical sequence.
http://www.avoision.com/experiments/pi10k/pi10k.html

Posted by: Chandresh on March 14, 2007

I made pi-shaped cookies!!! And they were awesome. Butter and sugar cookies frosted with chocolate. I handed them out in my calculus class and to my math and science teachers. And I remembered today was also Einstein's birthday, so I made cookies with the E=mc^2 frosted on them

Posted by: milena on March 14, 2007

MIT has a history of releasing admission decisions on the pi day..but sinc the last year they have been releasing them on the 17 march.

Posted by: Anonymous on March 14, 2007

I know 50 digits. I LOVE pi day!!

Posted by: Jillian on March 14, 2007

Oh my god! Pi day is the BEST holiday ever!! Today, i wore a pi t-shirt, and painted little pi signs on my nails! then, to top it all off we had math team, and guess what we were doing today?? yep, circumference/diameter! it was awesome!!!!! plus, i won our contest in AP calculus today because i knew the most digits of pi- 107 (haha, thats half of 314!!)

Posted by: pi-lover! on March 14, 2007

Our math teacher handed out a revised poem of Poe's Raven. It was a mnemonic. it matched the original story, tone and rhyme scheme fairly closely. it uses 740 words- I think it slightly outdoes above's mnemonic

Posted by: 0 on March 14, 2007

Our Mu Alpha Theta group put on a big display for Pi Day, we were all stoked about it. The thing that troubles me is if I had to attend a Mu Alpha Theta meeting today :S. Anyways, happy Pi Day to everyone and all fellow math lovers.

Posted by: Sean M on March 14, 2007

Most people at my school don't even know what pi day is, so we don't celebrate it at all. I know about 50 characters.

Today's not the only pi day according to Wikipedia, though. Here are some others:
March 14 (U.S. date system)
July 22 (European date system)
November 10 (314th day of the year)
Wikipedia Link

Posted by: Evan on March 14, 2007

my BC calculus class ordrered pies from a local restaurant...too bad it's second period!

Posted by: Alyssa on March 14, 2007

great song! I have now... hem hem... incorporated it myself! thats great!!!!!

thanks!!!

Posted by: Lendz on March 14, 2007

I memorized 141 digits (as in one hundred forty-one, not 3.141) back in 7th grade, and for some reason, I can still recite them today. I should really use that room for something else!

Posted by: Charlie B on March 14, 2007

Pi-lover! - 107 is half of 314? Do you mean you memorized 157?

Posted by: 0 on March 14, 2007

Happy Pi Day! Yeah, I only know 12 digits... Usually at our school there's a whole Pi Day celebration after school, starting at 1:59 PM to be exact, but this year they didn't do it! Like last week the teachers were negotiating a new contract and were kind of on strike and weren't allowed to do anything after school, not even stay after to help kids. Some union thing. But yeah, so no Pi Day planned for this year! Though I have to say, I'm more of a chem person so I'm more a fan of Mole Day.

Posted by: 0 on March 14, 2007

oops! "Anonymous" - yah, your rite 107 isnt half of 314! i meant to write i have 157 digits memorized- (I'm a math geek: i amd good at memorizing pi, NOT TYPING!! hahaha)

I WISH this day would NEVER END!!!!!!!!!!!!!!!! I am still celebrating!!

what did ppl do @ MIT today?? i'm coming there next year and i am SOOOO EXCITED!!! i CANT WAIT TILL PI DAY NEXT YEAR when i'll be at MIT!!!!!!!!!!!!!!!!!

Posted by: pi-lover on March 14, 2007

Not good at memorizing numbers but my IB Computer Science teacher brought us pi! ^^

Posted by: Anzu on March 14, 2007

25 Digits memorized here... I passed on the celebration today by wearing the Pi shirt and at 1:59 (and 26 seconds) screaming out happy Pi day (had the help of about 10 other people)

Posted by: Rob on March 14, 2007

its my birthday....hence my love in math is obvious from my day

btw albert einstein was born on pi day

Posted by: mars on March 14, 2007

It's my birthday today. Hopefully, I'm accepted, so that i can celebrate my birthday, Einstein's birthday, and Pi Day at MIT. That would be sweet!

Posted by: Josh on March 14, 2007

charlie b-
considering you've remembered the digits for that long, they're already in your long term memory instead of your short. according to my psych text, long term memory has an infinitely large capacity to store information. therefore, i'm sure you still have plenty of room for all kinds of other sweet facts!!

go pi!

Posted by: anonymous on March 14, 2007

I know 45. I'm working on it, I swear! No savant or anything, but oh well.

Posted by: Grace on March 14, 2007

I needed to memorize 37 for freshman year geometry. My math teacher, was, well, more insane than yours. Proof, you say? Ok. [insert web URL] *Apparently his site's down, featuring pictures of him test-riding roller coasters, poems we've written, pictures of himself that have been in the yearbook, and general allusions to the dozens of geometry related TATTOOS he has on his arms, back, and legs. O_O

Anyways....since then I only know part of the way into the palindrome (semi-palindrome?)

3.141592653589793238...?

Posted by: kevinfromMA on March 14, 2007

I know 30 digits.hihi. but no celebration in my country. ahh

Posted by: hihi on March 14, 2007

I know 30 digits.haha. but no celebration in my country

Posted by: hihi on March 14, 2007

Hihihaha are ya bengali ??

Posted by: The madman who makes people fly aka Captain SS Wan on March 14, 2007

We had bumbleberry pie today in math. yum! Plus I got 34/32 on my math test that I didn't study for. Thanks for telling me not to study, people on MIT chat!

Posted by: Elizabeth on March 15, 2007

I ran into five separate instances of free pie today. It was excellent.

Posted by: Scott '10 on March 15, 2007

look, a pi sing-along!

pisingalong.ytmnd.com

Posted by: jack on March 15, 2007

Ha, awesome. My friend's birthday was on Pi Day. I made her a cake with the symbol "π" in the center and the approximation of it on the circumference of the cake.

Posted by: alex v. on March 15, 2007

I memorized 100 digits the week before, but didn't make my goal of 200 digits by Pi Day. My friends were still lamenting my attempts, though, alas. Of course, even some of the non-math nerds among them have pi memorized to 29 digits... We brought in two pies to share during lunch. Our stats class, sadly, did not acknowledge pi day. It greatly saddened me.

Posted by: Alice on March 15, 2007

Sheesh, I totally missed Pi day because my school doesn't do anything for it. Everyone in my class thinks I'm uber-nerdy for knowing 3.141592653589793238462643383279502 but that's hardly anything compared to some of the other people here! Anyway, this blog post reminds me of that rap by Weird Al, "White and Nerdy"...

First in my class here at MIT
Got skills, I'm a champion at D&D
MC Escher, that's my favorite MC
Keep your 40, I'll just have an Earl Grey tea
My rims never spin, to the contrary
You'll find that they're quite stationary
All of my action figures are cherry
Stephen Hawking's in my library
My MySpace Page is all totally pimped out
Got people begging for my top eight spaces
Yo, I know Pi to a thousand places...

Do people at MIT play this song a lot? =P

Posted by: Edward on March 15, 2007

I ain't a math geek sorry.... I am kinda odd in ya lot but congrats on your memorizing power........ I never memorized it......... I knew and noted it down.

Posted by: The madman who makes people fly aka Captain SS Wan on March 15, 2007

today, is now, the ides of march.

let us honour this day to the fullest.

Posted by: lendz on March 15, 2007

Sad...
We didn't discuss properties.
You all might know about all of these, but here are a few:

1) pi = average no. of ways in which a randomly selected non-negative integer can be expressed as the sum of squares of integers.
PROOF: Just check the number of lattice points inside the circle with area sqrt(n) [use two inequalities that converge to the same thing], divide by n, let it tend to infinity and rearrange the equation you get to prove it.

2) 6 x ( pi ^ (-2)) = prob. that two randomly chosen positive integers are relatively prime = inverse of limit of sum of inverses of squares of positive integers.
I think there's a proof on Wikipedia. I had one using the , and limits

3) (pi - 2)/4 = probability that randomly chosen x, y in interval (0,1) make an obtuse triangle with 1.
Proof: Let C be a circle with radius 1 and centre O. Interpret the square [0,1]x[0,1] and consider the area of C above y = 1 - x.

4) pi/4 = 1 - 1/3 + 1/5 - 1/7 + ...
Proof 1: Use the Fourier expansion for the function giving the fractional part of x to prove that
lim[n to infinity] SUM[a=1 to n][(sin ax)/a] = [pi - x]/2 .
Alternatively, just differentiate the sum [wrta] and apply DeMv's Thrm.

I'll stop - post shouldn't be too long and I can't think of more. pi on four = arctan a half + arctan a third, but everybody knows all about that one.

Posted by: Chandresh on March 15, 2007

Chandresh, i'm not sure what fourier expansion is, but for #4, that's the same as using the mclaurin series for inverse tan and letting x= 1.

Posted by: jenn on March 15, 2007

I've heard that the best way to memorize pi is to memorize about ten digits and then to just spout random numbers for the next ten minutes until the impressed bystanders get you to shut up. I suppose that technique doesn't work at MIT......!

My calc class had a pi party. We had cherry, peach, strawberry, and apple pies, and bagels, and homemade ice cream.

Posted by: Maia on March 15, 2007

Ahh pi day, the most anticipated lunch hour activity of the year at my school. Math club started it last year' we throw pies at teachers and sell slices to students. I made a sweet three stooges sign to advertise. who wants pi? :D

Posted by: Audrey H. on March 15, 2007

My math teacher is having letting some of his classes memorize places of pi for a few e.c. points. But if you get to one hundred places you join the 100 club and get a cool little pin. Its all about the pride of being in the club. I was the first person in my AP Calculus class to recite to one hundred. (If your really cool you can do it backwards without ever looking at it backwards.) Don't know if anyone mentioned this but the savant in England recite about 22,500 places and holds the record for only fifth in the world. The actual world record is 43,000 places.

Posted by: Kelsey on March 15, 2007

i only know 8 digits... i think its the most out of my school tho... sad.

Posted by: myrafi on March 15, 2007

112 digits, I broke 100 for pi day this year (I had 150ish back in 8th grade and had since degenerated to about 75).

Kelsey -- that sounds cool about backwards, but I feel like I'd fail that one miserably.

Posted by: Yuki on March 15, 2007

Hey they never aired the part with you in it..

Posted by: 0 on March 15, 2007

I dressed up.
Sadly, almost nobody got it. One person stared at me for a while, then asked,
"So... what does that symbol mean?"

Posted by: Greg Courville on March 15, 2007

Guyz... help this to cross 100

Posted by: The madman who makes people fly aka Captain SS Wan on March 16, 2007

7 more to go .....

Posted by: The madman who makes people fly aka Captain SS Wan on March 16, 2007

6

Posted by: The madman who makes people fly aka Captain SS Wan on March 16, 2007

5

Posted by: 0 on March 16, 2007

4

Posted by: 0 on March 16, 2007

3

Posted by: this time i must remain annonymous on March 16, 2007

2

Posted by: this time i must remain annonymous on March 16, 2007

1

Posted by: this time i must remain annonymous on March 16, 2007

And finally 100th thanks to all who supported me.

Posted by: The madman who makes people fly aka Captain SS Wan on March 16, 2007

MIT Admissions

Massachusetts Institute of Technology

Bryan O. '09

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