# ℶ

## ℶ - Translingual

### Symbol

**ℶ** (*English symbol name* **beth**)

- (set theory) Symbol for the cardinality of an infinite set in a iterative hierarchy of power sets, starting with ℵ₀. Usually indexed by an ordinal number.
- ${\beth}_{0}={\aleph}_{0}$, ${\beth}_{\alpha +1}={2}^{{\beth}_{\alpha}},$ and ${\beth}_{\lambda}=sup\{{\beth}_{\alpha}:\alpha <\lambda \}$ for a limit ordinal
*λ*.

- ${\beth}_{0}={\aleph}_{0}$, ${\beth}_{\alpha +1}={2}^{{\beth}_{\alpha}},$ and ${\beth}_{\lambda}=sup\{{\beth}_{\alpha}:\alpha <\lambda \}$ for a limit ordinal

#### Usage notes

Unicode has two code points for the Hebrew letter beth. For Hebrew text, ב should be used. This character should be used for the mathematical symbol since it retains the left-to-right orientation of the text.