MSRI organiza el día Tau. Diferentes pasatiempos e interesantes oportunidades se pueden ver en su anuncio…

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MSRI: Math Games + Matching Gifts 6.28.22  π

You may be familiar with Pi Day on March 14th, but there is another mathematical day that is gaining speed: June 28th, also known as Tau Day. Tau Day playfully celebrates τ = 6.28..., which is 2π

Because the value of tau is twice the value of pi, supporters of Tau Day call for “twice as much pie.” In this spirit, two generous MSRI supporters have offered to match all donations on June 28, 2022, up to $11,000.


MSRI_TauDay2022 logo

For Tau Day 2022, we invite you to explore a few entertaining yet challenging puzzles centered around Tau, created by Dr. Scott Kominers, whom you may know from Kominers’s Conundrums on You can try Puzzle #1 below, and we'll share more on our Twitter @mathmoves through June 28th!

Tau Day Puzzle #1

Created by Scott Kominers

Everyone is excited for Tau Day – but in fact they're so excited that their math has gotten a bit mixed up. The sum of two odds isn't an "unum"! Can you find a way to replace each letter with a decimal digit in so that this mathematical expression makes sense?

ODD + ODD ----- UNUM

If you try the puzzle, reply to this email to submit your answer, or you can try them all on June 28th and submit your answers then to play along!The first person to submit all four puzzle solutions will receive an official Tau t-shirt (available in black in adult unisex or women's sizes S-4XL) and bragging rights via an MSRI Tau Day medallion. 

Tau Fact: Did you know that Persian astronomer and mathematician Jamshīd al-Kāshī computed the value of tau to 16 decimal points in 1424 CE?

Support Our Quest for Research for Tau Day

Every gift to MSRI 's Tau Day 2022 will be matched up to $11,000 and will support some aspect of the Institute’s mission: Knowledge & Research, K–12 Education, and Public Programs & Initiatives. The generosity of our donor community allows us to fund scientific programming and workshops, outreach projects, and support for individuals including MSRI Postdoctoral Fellows.