13.7 Exercises

    • Let  F1 be

    • Let  F2 be

    • Let  F3 be

    • Let  F4 be

    What are:  F1\ \sqcup \   F2,  F1\ \sqcup \   F3,  F2\ \sqcup \   F2,  F2\ \sqcup \   F3, and  F4\ \sqcup \   F3?

  1. What are the results of the following queries:

    val(foo,a,[goo:b,foo:a|X],Y).
     
    val(foo,a,[goo:b,foo:a|X],_).
     
    val(foo,Z,[goo:b,foo:a|X],Y).
     
    val(hoo,b,[goo:b,foo:a|X],Y).
     
    val(hoo,[noo:b,moo:a|W],[goo:b,foo:a|X],Y).


Patrick Blackburn and Kristina Striegnitz
Version 1.2.4 (20020829)