I sewed myself an academic cap on the day of the number π with the number π raised on the facade. The cap area is minimal. The size of my head is 58 cm. The volume of the cap was equal to π liters. Tomorrow I'll go with this cap to celebration of π-number!
I have got a letter today:
Pi Day is almost here, and we have a sweet deal for you! Since a 3.14% discount would be totally irrational, between now and the end of the month, you can save 31.415% off Home and Student Editions of Mathematica and Wolfram|Alpha Notebook Edition. This offer is valid until March 31.415, but we'll round that up to April 1 for you (no joke!).