Re: RFN (Request for Notation)

David B. Benson wrote:

Dear Colleagues,

I am preparing notes for a sophomore (second year) course, and I am finding several places wherein I can find no standard notation. Your suggestions will be most appreciated.

(2) I need a snappy name for an order pair in a relation R. The books I have seem to just say ``...the ordered pair (x,y) in relation R...''

Depends what you want to talk about. If you want to talk about R as simple a set then I would normally refer to an element of R a tuple of R where the context tells you that the tuple is of length two. Regards Justin