Help On LaTeX2e \ensuremath

# Hypertext Help with LaTeX
\ensuremath (LaTeX2e)

`\ensuremath{Text set in math mode}`

The argument of the `\ensuremath` command is always set in math mode, regardless of the current mode. Note that math mode is not specifically invoked in the argument of the `\ensuremath` command.

Thus `\ensuremath{$\alpha^2+\beta^2$}` is not correct.
The correct form is `\ensuremath{\alpha^2+\beta^2}`.

See also `\newcommand`

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