If you are adopting a low-carb diet for diabetes control, consult with your doctor about what is appropriate. A Word From Verywell. When you switch from a regular vegetarian diet to a low-carb vegetarian diet, your sources of protein may need to change from high-carb beans and grains to lower-carb soy, seitan, eggs, and milk. Enjoy exploring new recipes within these choices.
William Jones and his Circle: The Man who invented Pi. In 1706 a little-known mathematics teacher named William Jones first used a symbol to represent the platonic concept of pi, an ideal that in numerical terms can be approached, but never reached.
In 1706 (a fruitful year for Pi), Machin found this rapidly converging formula for its calculation: Ï/4 = 4 x arctan (1/5) - arctan (1/239). Also in 1706, the Welshman, William Jones, became the first person to use the Greek letter Ï as an abbreviation for the periphery of a circle with unit diameter. Euler adopted the symbol, and it quickly became the standard notation for Pi in all mathematical contexts.