Dear all,

\nequiv seems to work both in a math mode and in an
ordinary text mode so I'd like to clarify the situation.

Is \nequiv defined as a binary operator when used in math
mode (that is \math{A\nequiv B})?

When I grepped \nequiv in /usr/share/texmf/tex/context,
it hitted nothing at all.  Where \nequiv is defined?

Thanks in advance.
Best regards,
Atsuhito Kohda