Multiplication tables: Difference between revisions

That said, note that <code>*/~</code> is the core primitive used to construct a multiplication table and this is a general technique so that, for example, <code>+/~</code> would make an addition table. The rest is just to make it look pretty (and to blank out the lower triangle -- we use a greaterless than or equal table (<code><:/~</code>) to control that).