logic) if and only if, i.e. necessary and sufficient. For example, two figures are congruent iff one can be placed over the other so that they coincide.
Last updated: 2002-12-28
Better Than TripAdvisor
- Holiday destination reviews, hotel information,
pictures, sightseeing advice and food reviews.
Updated: Mon Jun 27 08:45:31 2016
No longer supported by Imperial College Department of Computing
Copyright Denis Howe 1985