Greek Letters symbol
\varPsiThe Greek letter \varPsi is used in mathematics and physics to represent various concepts, such as wave functions in quantum mechanics, stream functions in fluid dynamics, and sometimes as a variable in equations. It is the uppercase form of the Greek letter psi.
Represents a wave function in quantum mechanics.
\varPsi(x) = \int e^{-x^2} \, dxUsed in fluid dynamics to represent a stream function in a potential flow.
\nabla^2 \varPsi = 0Represents a mathematical series or function.
\varPsi = \sum_{n=1}^{\infty} \frac{1}{n^2}