U+1D713 "𝜓" Mathematical Italic Small Psi Unicode Character

U+1D713 "𝜓" Mathematical Italic Small Psi is a glyph representing the lowercase Greek letter psi in a mathematical italic style, designed specifically for use in scientific and mathematical notation rather than standard Greek text. It belongs to the “Mathematical Alphanumeric Symbols” block, which was introduced to provide distinct, semantically unambiguous characters for variables and symbols in formulas, helping to distinguish them from ordinary text. In mathematics and physics, this italic psi is commonly used to denote wave functions in quantum mechanics, as well as various functions and constants in fields like number theory and fluid dynamics.