## Hypertext Help with LaTeX

### \newtheorem

\newtheorem{env_name}{caption}[within]

\newtheorem{env_name}[numbered_like]{caption}

This command defines a theorem-like environment.

• env_name - The name of the environment -- a string of letters. Must not be the name of an existing environment or counter.
• caption - The text printed at the beginning of the environment, right before the number.
• within - The name of an already defined counter, usually of a sectional unit. Provides a means of resetting the new theorem counter within the sectional unit.
• numbered_like - The name of an already defined theorem-like environment.

The \newtheorem command may have at most one optional argument.

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