The Intc command facilitates the input of multiple integrals from $-\mathrm{\infty }$ to $\mathrm{\infty }$, frequently used in Physics. The first argument represents the integrand, while the following arguments (one or many) are the integration variables. Note that all integrals built by using Intc use the inert Int instead of int.

$\mathrm{with}\left(\mathrm{Physics}\right)\:$

$\mathrm{Setup}\left(\mathrm{mathematicalnotation}=\mathrm{true}\right)$

$\left[\mathrm{mathematicalnotation}=\mathrm{true}\right]$

$\mathrm{Intc}\left(F\left(\mathrm{x1}\,\mathrm{x2}\right)\,\mathrm{x1}\,\mathrm{x2}\right)$

${\int }_{-\mathrm{\infty }}^{\mathrm{\infty }}\left({\int }_{-\mathrm{\infty }}^{\mathrm{\infty }}F\left(\mathrm{x1}\,\mathrm{x2}\right)\ⅆ\mathrm{x1}\right)\ⅆ\mathrm{x2}$

$\mathrm{Coordinates}\left(X\right)$

$\mathrm{Systems\; of\; spacetime\; coordinates\; are:}\left\{X=\left(\mathrm{x1}\,\mathrm{x2}\,\mathrm{x3}\,\mathrm{x4}\right)\right\}$

$\left\{X\right\}$

$\mathrm{Intc}\left(F\left(X\right)\,X\right)$

${\int }_{-\mathrm{\infty }}^{\mathrm{\infty }}\left({\int }_{-\mathrm{\infty }}^{\mathrm{\infty }}\left({\int }_{-\mathrm{\infty }}^{\mathrm{\infty }}\left({\int }_{-\mathrm{\infty }}^{\mathrm{\infty }}F\left(X\right)\ⅆ\mathrm{x1}\right)\ⅆ\mathrm{x2}\right)\ⅆ\mathrm{x3}\right)\ⅆ\mathrm{x4}$