Remembering Pi: Google Doodle honours mathematical constant with apple pies

Nowadays, Pi Day is often associated with food - perhaps pizza, or a meat pie, but in this case, a classic American apple pie with a French twist.

The International Pi Day is celebrated today, March 14th, the same day when, unfortunately, Stephan Hawking died.

Commemorating the day, Google has posted a doodle, which includes the more edible "Pie", baked by award-winning pastry chef, Dominique Ansel. Dubbed Pi Day, this comes right after Google recognised William Henry Perkins who had first discovered a synthetic purple coloured dye used in clothing and painting. Therefore, it is an irrational number which is less than infinity. It's an annual celebration of the mathematical constant, π. The result comes out to be 3.14 which can extend to quite a few decimal places as mathematicians say that the divisibility continues to trillions. As for the actual first calculation of 3.14, that's largely attributed to Archimedes, the Greek mathematician and astronomer who lived in the third century B.C. Ansel, in his signature chef style, honoured the mathematical constant by demonstrating the pi formula using his personal Salted Caramel Apple Pie recipe.

Pi represents the ratio of a circle's circumference to its diameter.

Pi has become a true cultural symbol, a metaphor for the mysteries of mathematics, which has inspired its own literary genre - Pilish. The rise of computing technology has led to an arms race of sorts to calculate ever more digits of pi: the current record was set past year by Christian physicist Peter Trueb, calculated pi to 22.4 trillion digits - 22,459,157,718,361, to be exact - outpacing the previous record set in 2013 by 9 million digits.

A number of places both local and national are rolling out special deals for the holiday.

Vanessa Coleman