3.14 : Happy Pi Day Or Do We Want Tau?

Pi day or Are we Ready for Tau?

Pi day or Are we Ready for Tau?


π is commonly defined as the ratio of a circle‘s circumference C to its diameter d:[1]

 \pi = \frac{C}{d}

3.14 happens to be a tribute to the mathematical number π (Pi), which is the ratio equal to the circumference of a circle to its diameter and approximate 3.14159.  It’s an irrational number, a transcendental number, and a “pie” actually is 2pi, in case you needed more confusion.  However, before getting over pi, I say we look at ways we can enjoy a couple pies on Pi day. has a list of information about things one can do on π day and a history of Pi as well as a few blunders that law makers have made in trying to celebrate Pi Day in the past.  As I live in the bay area, there are definitely enough mathematicians who take amusement on all things around numbers.

Yet, for all the things that make the complications of pi awesome, there are folks, such as a youtube video (below) that has been watched over 1m times, that are thinking we should get over pi and choose tau.  This is awesome as it speaks of the Tau Manifesto and Tau Day which is 6.28.  Although celebrating number holidays are a thing in my circles, I felt that I would hopefully have some mathematicians write me a bit more about Pi for amusement and add their opinions and maybe ratios to the discussion of pi vs. tau.

Is the Pi concept wrong? Any Pi Day Plans?

As for me, well, I’d just like a reason to eat some pie and so I prefer to stick to pi and eat “pies”. Unsure I’ll make it but in San Francisco,  there is a Night Life at California Academy of Science for “Pi Night”.

Formula and definition of Pi were courtesy of the “Pi” Wikipedia page.


2 thoughts on “3.14 : Happy Pi Day Or Do We Want Tau?

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