LaTeX string used for an invisible plus with mixed numbers e.g. in '1 3/4'.
Leave it empty to join the main number and the fraction, i.e. render it
as 1\frac{3}{4}.
Use + to insert an explicit + operator between them,
i.e. 1+\frac{3}{4}
Empty by default.
When an expression contains the error expression ["Error", 'missing'],
serialize it with this LaTeX string
LaTeX string used for an explicit multiply operator,
Default: \times
LaTeX string used to render an invisible multiply, e.g. in '2x'.
Leave it empty to join the adjacent terms, i.e.
2x.Use
\cdotto insert a\cdotoperator between them, i.e.2\cdot x.Empty by default.