Yunoncha harf "π" (pi) birinchi marta 1706 yilda Uels matematikasi Uilyam Jones tomonidan matematikada aylana konstantini ifodalash uchun ishlatilgan. Yunoncha harfdan foydalanish ehtimol "perimetr" uchun yunoncha so'z "περίμετρος" (perimetr) bo'lgani uchun tanlangan, bu esa "π" ramzini aylanning aylanasi va diametri nisbatini ifodalovchi matematik konstanta uchun tabiiy belgi sifatida tanlaydi. Bundan tashqari, yunoncha harf π allaqachon qatorning ko'paytmasi uchun standart matematik belgi bo'lib, uni aylana konstanti uchun qulay tanlovga aylantirgan.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence