Talk:Pi (letter)

History of the letter
I recently read in a book by Ralph Ellis that the letter was a late addition to the Greek alphabet. Can someone please elaborate on the history of this? Burns flipper 12:45, 28 February 2007 (UTC)

Q.T. 3.142

π


 * No. It is one of the original borrowings from Phoenecian. It's as old as Greek letters get. VIWS talk 03:41, 28 July 2011 (UTC)

&pi; (pi)
The usage of &Pi; is under discussion, see Talk:Pi. 65.93.12.101 (talk) 01:28, 4 April 2011 (UTC)

Why are there only the italic and bold variants of mathematical pi in Unicode (and not a plain variant)?
If there isn't a plain version, then is one of the bold/italic variants preferred? — Preceding unsigned comment added by 121.45.239.126 (talk) 02:59, 27 March 2014 (UTC)
 * I know that it is an old question, but in case anybody else wonders the "plain" $\pi$ symbol is the greek letter U+03C0. &mdash; GhostInTheMachine talk to me 18:13, 1 July 2020 (UTC)
 * Math symbols are bold or italic to differentiate them from letters. The symbol "π" is the Greek letter but it's often used as a substitute for the math pi. The Old Macintosh (talk) 15:59, 6 July 2023 (UTC)

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