By A CooperYou've actually dealt with modular arithmetic for most of your life: the clock face represents arithmetic with modulus 12. If you've ever served in the... |relations

By A CooperWe ordinarily are completely comfortable writing things like The symbols and , though, are definitely not the same. One of them, for example,... |relations

By A CooperNow we are ready to consider some properties of relations. Our interest is to find properties of, e.g. motherhood. To do this, remember that we... |relations

By A CooperBesides the ordinary set operations, there are special operations we can perform on relations. Definition. The inverse of a relation from to is the relation... |relations