Symbols:Greek/Psi

Previous  ... Next

Psi

The $23$rd letter of the Greek alphabet.

Minuscule: $\psi$
Majuscule: $\Psi$

The $\LaTeX$ code for $\psi$ is \psi .

The $\LaTeX$ code for $\Psi$ is \Psi .

Mapping

$\psi \left({x}\right)$

The Greek letter $\psi$, along with $\phi$ and $\chi$ and others, is often used to denote a general mapping.

In the context of abstract algebra, it often denotes a homomorphism.

The $\LaTeX$ code for $\psi \left({x}\right)$ is \psi \left({x}\right) .