Greek Small Letter Alpha

U+03B1

\alpha

The ‘α’ is a letter of the Greek alphabet. In mathematics, physics, and engineering, it is often used to denote an angle, a coefficient of thermal expansion, as an alpha particle, among other uses.

Greek Capital Letter Alpha | Symbol

The capital Greek letter (Α) is visually very similar to the Latin Capital Letter A. Refer to the Latin Capital Letter A for how the symbol appears in math.