Inline user-defined LaTeX macros

Besides using ourbigbook.tex, you can also define your own math macros directly in the source code.

This is generally fragile however because it doesn't work:

across headers on OurBigBook Web
across different source files on OurBigBook CLI. That can be worked around with ourbigbook.tex on CLI, but ourbigbook.tex does not work on Web either.

If you still want to do it for some reason, first create an invisible block (with {show=0}) defining with a \newcommand definition:

$$
\newcommand{\foo}[0]{bar}
$${show=0}

which renders as:

We make it invisible because this block only contains KaTeX definitions, and should not render to anything.

Then the second math block uses those definitions:

$$
\foo
$$

which renders as:

$b a r$
(14)

Analogously with \def, definition:

$$
\gdef\foogdef{bar}
$${show=0}

which renders as:

and the second block using it:

$$
\foogdef
$$

which renders as:

$b a r$
(15)

And just to test that {show=1} actually shows, although it is useless, and that {show=0} skips incrementing the equation count:

$$1 + 1$${show=1}
$$2 + 2$${show=0}
$$3 + 3$${show=1}

which renders as:

$1 + 1$
(16)
$3 + 3$
(17)

 Ancestors (6)