This is the mathematical definition of pi.
Pi is the ratio between a circle's circumference and its diameter.
The Pi function is used in number thoery to approximate the relative number of these integers whose only divisors are 1 and itself below a given integer.
prime numbers
"In 1892, the city of Boston experienced the "Great Molasses Flood," where a large tank of molasses burst and flooded the streets. Among the various items swept away by the molasses was a bakery's stock of ____, which added a sweet twist to the disaster."
Pies
(This event was also known as Piemageddon, apparently)
Not to be confused with Mizzou's own Dr. Banks, this English mathematician spent some 30 years calculating the first 707 digits of pi. Turns out he made an error after the 527th place :(
William Shanks
If you were to print out this many digits of pi in standard 12 pt Times New Roman, the number would stretch from Kansas to New York City.
ONE BILLION DIGITS
This Swiss mathematician popularized the Greek letter Pi to represent the mathematical constant.
Leonhard Euler
This Greek letter is used to represent two times pi.
Tau
This is another name for “the quantity which, when the diameter is multiplied by it, yields the circumference.” (It's obvious why they changed it, I hope.)
e
nah i'm just kidding it's pi
Akira Haraguchi apparently took this many hours to recite this many digits of pi back in 2006.
16.5 hours
This famous physicist was born on Pi Day.
This Swiss-German mathematician proved that pi was irrational in 1762.
Johann Lambert
Pi is not only irrational but also this, meaning that it is not the root of a non-zero polynomial of finite degree with rational coefficients
Transcendental
This is the current record for decimal digits of pi memorized & recited.
70,000 digits (Rajveer Meena, 2015)
This famous physicist died on Pi Day
Stephen Hawking
This Chinese mathematician seven digit (yawn) approximation for Pi held the record for 1,000+ years!
Zu Chongzhi
This is the exhaustive limiting process of using polygons with progressively more sides to approximate pi.
Pi Day was started in this year, the same year table tennis became an official sport, Richard Feynman passed away, and the Dodgers won the world series.
1988
In 1888, a man from this state claimed to have supernaturally obtained the ability to exactly measure a circle and proposed to round pi to 3.2 through the state legislature to 'copywright' his findings. A math professor proved that his claims led to an obviously errant approximation for pi.
Indiana
Known as the Diophantine approximation of Pi, this fraction gives a very crude approximation.
22/7
According to mathematicians, it is more accurate to say that circles have infinitely many of these rather than none, owing to its relationship to pi.
Corners
This book written entirely in "Pi-lish" was written such that the number of letters in each word corresponds to the digits of pi.
Not a Wake by Michael Keith
This French luxury fashion company sells a cologne called 'Pi', a fragrance that allegedly "enhances the attractiveness of intelligent and visionary men".
Givenchy
The solution to the famous Basel Problem gives the infinite sum of the reciprocals of the square numbers as pi to what power over 6?
2
This famous Indian mathematician gave this yucky and gross approximation for the reciprocal of pi:
Srivinvasa Ramanujan
Do you think this is cool?
Sure is, huh?