π is a universal mathematical constant in mathematics and physics. Capital ∏, lowercase π (English name: Pi, Chinese name: Pai) is the sixteenth Greek letter.

Operators of continuous products in mathematics. Lowercase letters: π. The mathematical constant π refers to the ratio of the circumference to the diameter of a circle on a plane. (The first seven digits of its value are 3. 14 15927. For more detailed values, please refer to the entry pi). Function (mathematics) π(n) is a kind of chemical bond formed by overlapping atomic orbitals side by side in particle physics. Profit in microeconomics. Inflation rate in economics. п in Cyrillic letters and p in Latin letters all come from pi.

Pi refers to the ratio of the circumference to the diameter of a circle on a plane. It is represented by the Greek letter π (pronounced "Pài"). In ancient China, there were names such as cycle, cycle rate and week. In general calculation, people convert π, an infinite acyclic decimal, into 3. 14 15926.

π mesons in nuclear physics

Terminology of molecular orbital theory

Hope to adopt.