Proofs of the mathematical result that the rational number 22/7 is greater than π (pi) date back to antiquity. One of these proofs, more recently developed but requiring only elementary techniques from calculus, has attracted attention in modern mathematics due to its mathematical elegance and its connections to the theory of Diophantine approximations. Stephen Lucas calls this proof "one of the
![Proof that 22/7 exceeds π - Wikipedia](https://cdn-ak-scissors.b.st-hatena.com/image/square/2c6bec6f2afd2124071bf1c7341dd9bad3241f17/height=288;version=1;width=512/https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2F9%2F92%2F22_Divided_by_7_Circle.png%2F1200px-22_Divided_by_7_Circle.png)