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It is often a problem to determine exactly where a document you printed actually got printed. It can depend on which room you selected the output to go to and which printer is actually plugged into the printer port in that room.

Suppose there are three computers, that are named c1, c2 and c3. There are two rooms, r101 and r202, and three printers pr1, pr2 and pr3. Each computer has a room selected. Each room can have a printer plugged into its port.

Using CILog, we want to axiomatize a domain so that you can answer questions about which room a document was printed and which printer it was printed on.

  1. Give the intended interpretation of each symbol used.
  2. Give the general axioms that are true for all configurations of printers.
  3. Show that your axiomatization works for more than one configuration.

David Poole

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