the annual 3.14 celebration of the mathematical constant of Pi. In normal times, a popular contest is hosted on this day by Somerville bakery and institution Petsi Pies. Over the past 15 years, memorizers young and old have lined up outside the popular neighborhood shop waiting to rattle off mathematical digits in exchange for free, miniature "cutie pies" decorated with the number 3.14. While that party can't happen this year due to the pandemic, the shop will still be open. However, 65-year-old founder Renee McLeod won't be working in the kitchen this time around. She recently passed the tor...