1. (difficult) The most difficult part of the reading to understand is the use of the words Relation, Domain, and Range that departs from any other mathematical and english usage that I have ever used or been familiar with. It is actually very frustrating to try to understand what is being described when the words mean things that my mind does not immediately understand.
2. (reflective) I can't see any application yet for a relation to take on the properties of being reflexive, symmetric or transitive. Is there going to be a way to shortcut to figure that out? Because checking each value to be sure its inverse is also in the set seems to be a waste of time.
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