On Thu, Sep 4, 2014 at 9:17 PM, Denis McMahon <denismfmcma...@gmail.com> wrote: > On Wed, 03 Sep 2014 07:16:34 +0000, Steven D'Aprano wrote: > >> Who uses + for disjunction (∨ OR) and concatenation for conjunction (∧ >> AND)? That's crazy notation. > > The way I was taught it in the mid 1980s, a.b === a and b, a+b === a or b.
The middle dot is another notation for multiplication, as is abuttal (not actually concatenation, in this context). So they're all saying the same thing: boolean 'and' is multiplication, boolean 'or' is addition. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
