* Pi Day, also see July 22 --" Pi Approximation Day "

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 Approximation Day is therefore observed on July 22.

* Pi Day, March 14

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.

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.

In 2009, the United States House of Representatives supported the designation of Pi Day.

The earliest known official or large-scale celebration of Pi Day was organized by Larry Shaw in 1988 at the San Francisco Exploratorium, where Shaw worked as a physicist, with staff and public marching around one of its circular spaces, then consuming fruit pies.

The Exploratorium continues to hold Pi Day celebrations.

On March 12, 2009, the U. S. House of Representatives passed a non-binding resolution ( HRES 224 ), recognizing March 14, 2009, as National Pi Day.

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

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

There are many ways of observing Pi Day.

The Massachusetts Institute of Technology has often mailed its application decision letters to prospective students for delivery on Pi Day.

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.

The town of Princeton, New Jersey hosts numerous events in a combined celebration of Pi Day and Albert Einstein's birthday, which is also March 14.

He was also a member of the Alpha Gamma Rho Fraternity, Pi chapter.

* Cao Zhi, Chinese poet, also younger brother of Cao Pi and son of the powerful warlord Cao Cao.

The UB is also home to three large research foundations: the Barcelona Science Park Foundation ( PCB ), which includes the Institute of Biomedical Research of Barcelona ( IRBB ); the August Pi i Sunyer Biomedical Research Institute ( IDIBAPS ); and the Bellvitge Institute for Biomedical Research ( IDIBELL ).

Assume also that the phase can be measured with an accuracy of 1 deg, i. e. means that the range can be determined with a precision of ( 600000 * 1 * Pi )/( 2 * 8000 * 180 )= 0. 33 km.

Wang Pi also received the office of Zuo Sanqi Changshi ( 左散騎常侍 ), a high-level consultant at the examination bureau of government ( 門下省, Menxia Sheng ).

There are also seven fraternities existing at Western, Alpha Epsilon Pi, Phi Gamma Delta, Delta Upsilon, Pi Kappa Alpha, Lambda Chi Alpha, Sigma Chi, and Kappa Alpha Society.

Aronofsky's debut feature, Pi ( also known as π ), was shot in November 1997.

There he joined the Pi Kappa Alpha Fraternity and was on the cheerleading squad ( fellow senator Trent Lott was also an Ole Miss cheerleader ).

There is also one large shallow fjord like inlet called Pi Ley with a small coral reef at the entrance.

Cao Pi was also fostering his image among the people and created the sense that Cao Zhi was wasteful and lacking actual talent in governance.

Legend also says Cao Pi assassinated his own brother, Cao Zhang.

In summary, under regulations established by Cao Pi, not only were the Cao Wei princes ( unlike princes of the Han Dynasty ) distanced from central politics, they also had minimal authority even in their own principalities and were restricted in many ways, particularly in the use of military.

Cao Pi also enjoyed a much closer relationship to the servants and subjects around Cao Cao, and they spoke well of him.

He was rescued by Xu Huang ( who coincidentally eventually also died under similar circumstances ) and together, they escorted Cao Pi back to safety.

He was also said to be full of respect for Confucian scholars, and supported the idea of allowing masters of the Five Classics to serve in the imperial court of Cao Pi, the first emperor of the state of Cao Wei.

He also joined the Pi Kappa Alpha fraternity and the Omicron Delta Kappa honor society.

While teaching there, she was elected a member of the newly formed Pi Gamma Mu honor society for the social sciences because of her interest in history and politics, which she had also studied.

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.

The main beneficiaries of this policy were those with access to copper, including the court official Deng Tong ( 鄧通 ) ( see also below ), to whom Emperor Wen had given a major copper mine in Yandao ( 嚴道, in modern Yaan, Sichuan ), and Liu Pi, the Prince of Wu, whose principality had a major copper mine at Yuzhang ( 豫章, in modern Nanchang, Jiangxi ).

For other uses, see Pi ( disambiguation ).

When you see Lars under the pier, Pi challenges Otto to a halfpipe skate duel.

In 1894, Chung Keng Quee hosted in his own gardens, in the name of Vice Consul Chang, Pi Shih ( Cheong Fatt Tze ), a dinner to welcome Admiral Ting ( see Battle of Yalu River ( 1894 ) and Battle of Weihaiwei ) and the Chinese Imperial Fleet of warships that he commanded.

* March 1 – The Pi Kappa Alpha Fraternity is founded at the University of Virginia.

On March 15, 220, Cao Cao died and his son Cao Pi inherited the title of " King of Wei ".

* Pi Day, which is also celebrated on March 14

" The first event was held on March 2, 2006, when Pi Phi actives and alumnae participated in the National Education Association's Read Across America Day.

As part of the celebration, Pi Beta Phi teamed up with Southwest Airlines to " Share the Spirit " by handing out new Dr. Seuss books to children flying on March 2.

On March 1 1869, exactly one year after the Alpha Chapter at the University of Virginia was formed, the Beta Chapter of Pi Kappa Alpha was founded at Davidson College.

In March of 2011, it was rumored that Pi Studios was closed.

March 14 is the nationally recognized Pi Day due to its similarity to the number 3. 14, or π.