Pi is used in formulas concerned with the dimensions of circles.

Her husband, who is the son of Alton John Mason of Shreveport, La., and the late Mrs. Henry Cater Parmer, was president of Alpha Tau Omega and a member of Delta Sigma Pi at Lamar Tech, and did graduate work at Rhodes University in Grahamstown, South Africa, on a Rotary Fellowship.

* 1904 – The Pi Kappa Phi Fraternity is founded at the College of Charleston.

Pi Gruis, an optical double with a variable component, is composed of Pi < sup > 1 </ sup > Gruis and Pi < sup > 2 </ sup >.

Pi < sup > 1 </ sup > is a semi-regular red giant with a minimum magnitude of 6. 7 and a maximum magnitude of 5. 4.

Pi < sup > 2 </ sup > is a white giant 132 light-years from Earth and is often brighter than its companion at magnitude 5. 6.

Pi Hydri, composed of Pi < sup > 1 </ sup > Hydri and Pi < sup > 2 </ sup > Hydri, is divisible in binoculars.

Pi < sup > 1 </ sup > is a red star of magnitude 5. 6, 740 light-years from Earth.

Pi < sup > 2 </ sup > is an orange star of magnitude 5. 7, 468 light-years from Earth.

The school is home to six different fraternities: Kappa Alpha Order, Alpha Phi Alpha, Sigma Alpha Epsilon, Pi Kappa Alpha, Lambda Chi Alpha, and Kappa Sigma ; as well as five sororities: Delta Delta Delta, Kappa Delta, Phi Mu, Chi Omega, and Delta Sigma Theta.

* 1868 – The Pi Kappa Alpha Fraternity is founded at the University of Virginia.

* 1907 – Delta Sigma Pi is founded at New York University.

The ubiquitous nature of makes it one of the most widely known mathematical constants, both inside and outside the scientific community: Several books devoted to it have been published ; the number is celebrated on Pi Day ; and news headlines often contain reports about record-setting calculations of the digits of.

The national honor society for college and university students of government and politics in the United States is Pi Sigma Alpha.

The product operator for the product of a sequence is denoted by the capital Greek letter Pi < span style =" font-family: times, serif ; font-size: 150 %">∏</ span > ( in analogy to the use of the capital Sigma < span style =" font-family: times, serif ; font-size: 150 %">∑</ span > as summation symbol ).

Pi Day is an unofficial holiday commemorating the mathematical constant π ( pi ).

Pi Day is observed on March 14 ( or 3 / 14 in month / day date format ), since 3, 1 and 4 are the three most significant digits of π in the decimal form.

Pi Approximation Day is observed on July 22 ( or 22 / 7 in day / month date format ), since the fraction < sup > 22 </ sup >⁄< sub > 7 </ sub > is a common approximation of π.

Pi Day is observed on March 14 because of the date's representation as 3 / 14 in month / day date format.

For Pi Day 2010, Google presented a Google Doodle celebrating the holiday, with the word Google laid over images of circles and pi symbols.

Tammet is a calculator able to work out complicated mathematical equations in his mind in a very short amount of time, and in a demonstrated event, was able to recite Pi from memory to over 22, 000 digits in a little over five hours.

The team was nationally ranked fourth in Debate at the 2010 Pi Kappa Delta National Tournament — the same national tournament the team was denied participation at over seventy-five years ago.

Later that year on December 11, Cao Pi forced Emperor Xian to abdicate and took over the throne, founding the Wei Dynasty.

In 220, after the death of Cao Cao, his son Cao Pi forced the Han Dynasty's last ruler, Emperor Xian to abdicate, taking over the Han throne and starting a new Cao Wei dynasty.

Mobara is also the hometown of Akira Haraguchi, the man famous for reciting over 100, 000 digits of Pi, who works as a mental health counsellor and business consultant in Mobara.

In 225, Cao Pi advanced against Sun Quan's Wu, and entrusted Sima Yi with command over the capital in his absence.

As a sign of his commitment to chimpanzees, and prompted by the finding of their proximity ( both genetically and behavioural ) with humans, and the threats hanging over their habitats, Sabater Pi once said that the decline in population and, in the case of some subspecies, their near extinction, was comparable to genocide among human beings.

Cao Ren observed that Liu Bei could not have too much control over his new men given by Yuan Shao, and targeted the rebel leader Liu Pi and had him killed in battle ; Liu Bei was subsequently defeated.

In 361, after the death of his cousin Emperor Mu ( Emperor Kang's son ), his older brother Sima Pi took the throne as Emperor Ai, and he took over the greater title of Prince of Langye, which Emperor Ai had previously held.

Pi Kappa Alpha ( ΠΚΑ ) ( sometimes called Pike, PiKA, or Pi Kap ) is a Greek social fraternity with over 220 chapters and colonies and over 250, 000 lifetime initiates in the United States and Canada.

In his speech for the proposal — to which he was a signatory along with Figueras, Salmerón and other opponents — Pi y Margall, himself a federalist, renounced for the moment to establish a federal republic, hoping the would-be-assembled Constituent Cortes to decide over the issue, and announced his acceptance of any other democratic decision.

Delta Sigma Pi has 60 alumni franchised Alumni Chapters on its roll for the 2007-2008 year in the United States, and over 40 more locations worldwide have Brothers with an interest in starting a new Alumni Chapter.

The Outstanding Chapter Award was created in 1957 and then renamed the Joseph Torchia Outstanding Chapter Award in 1970 to honor Mr. Torchia for his many contributions to Phi Sigma Pi over the course of four decades.

# Jealous Lies Sandra Bacon and Jeannie West's friendship is almost strained over Sandy being in Pi Beta Alpha, and Jeannie is not.

The college has over 80 student organizations on campus, including: Pi Sigma Alpha ( Political Science Honorary ), Sigma Tau Delta ( English honors society ), Beta Beta Beta ( Biology Academic Fraternity ), Delta Sigma Pi ( Business Fraternity ), Circle K International ( Service Organization, College branch of Kiwanis ), Delta Omicron ( Chapter Alpha Phi, International Professional Music Fraternity ), Southern Heat ( Dance Team ), Interlachen ( Yearbook ), The Southern ( Newspaper ), Omicron Delta Kappa ( National Leadership Fraternity ), Psi Chi ( Psychology Fraternity ), Sigma Rho Epsilon ( Religious Community Service Fraternity ), Theta Chi Beta ( Gimel Chapter, Religion Honorary ), and Phi Alpha Delta ( Law Fraternity, International ).

For over eighty years, Pi Alpha Phi alumni have pursued and established successful careers, becoming pioneers in business, law, medicine, politics, higher education, science, entertainment, and nearly every other field imaginable.

* Pi Kappa Lambda-a national honor society in the field of music.

Pi wall, track, field, Concourse Building

Simon was a brother in the Alpha Epsilon Pi fraternity, earned a degree in English literature, and briefly attended Brooklyn Law School after graduation, but his real passion was rock and roll.

Starting in 2012, MIT has announced it will post those decisions ( privately ) online on Pi Day at exactly 6: 28pm, which they have called " Tau Time ", to honor the rival numbers Pi and Tau equally.

All but two chapters of Delta Kappa were re-initiated as members of Sigma Pi, growing the fraternity's numbers drastically.

Tony ends up going on the numbers that represents Double Pi and saves James.