pi

Summary

pi is a transcendental number^[1]. pi ranks in the top 8% of transcendental_number entities by monthly Wikipedia readership (8,685 views/month).^[2]

Key Facts

• pi's image is recorded as Pi-unrolled-720.gif^[3].
• pi's image is recorded as Matheon2.jpg^[4].
• pi's instance of is recorded as transcendental number^[5].
• pi's instance of is recorded as real number^[6].
• pi's instance of is recorded as mathematical constant^[7].
• pi's instance of is recorded as UCUM constant^[8].
• pi's instance of is recorded as ratio of lengths^[9].
• circle is named after pi^[10].
• Ludolph van Ceulen is named after pi^[11].
• Ludolph van Ceulen is named after pi^[12].
• pi's GND ID is recorded as 4174646-6^[13].
• pi's Library of Congress authority ID is recorded as sh85101712^[14].
• pi's NDL Authority ID is recorded as 00562015^[15].
• pi's Commons category is recorded as Pi^[16].
• pi's pronunciation audio is recorded as LL-Q1571 (mar)-Vj18081991-पाय.wav^[17].
• pi's Unicode character is recorded as π^[18].
• pi's BNCF Thesaurus ID is recorded as 6838^[19].
• pi's Freebase ID is recorded as /m/05wjw^[20].
• pi's NL CR AUT ID is recorded as ph117728^[21].
• pi's OEIS ID is recorded as A000796^[22].
• pi's topic's main category is recorded as Category:Pi^[23].
• pi's notation is recorded as pi^[24].
• pi's National Library of Spain SpMaBN ID is recorded as XX536170^[25].
• pi's Dewey Decimal Classification is recorded as 512.73^[26].
• pi's approximation algorithm is recorded as Gauss–Legendre algorithm^[27].

Body

Works and Contributions

Things named for pi include Pi Day^[28], an awareness day^[29], founded in 1988^[30]; PiHex^[31], a software^[32]; Super PI^[33], a computer program^[34], founded in 1995^[35]; and 314159 Mattparker^[36], an asteroid^[37].

Why It Matters

pi ranks in the top 8% of transcendental_number entities by monthly Wikipedia readership (8,685 views/month).^[2] pi has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.^[38] pi is known by 84 alternative names across languages and contexts.^[39]

Entities named for pi include Pi Day^[28], an awareness day^[29], founded in 1988^[30]; PiHex^[31], a software^[32]; Super PI^[33], a computer program^[34], founded in 1995^[35]; and 314159 Mattparker^[36], an asteroid^[37].