We are still using an optional collaborative homework policy for this section. This is subject to alteration for later assignments, depending on how students like it, and how well it functions. The experimental policy is this:
If you wish, you may collaborate with a small number of other students, to help each other with the assignment and compare solutions. However, if you do this, each group of students that collaborate must turn in just one shared assignment, for a shared grade. (All students in the collaborating group, and which problems each of them worked on, must be named on the group's handed-in joint assignment.) Your group may either work together on all the problems, or divide up the problems amongst yourselves, but you should make sure that everyone in your group understands how to do the solutions to all the problems, because any member of the group may be called on in class to explain the answer to any problem. (And you will all separately be responsible for all the material on quizzes and exams.)
The indicated extra credit exercises are each worth 1 extra point out of the 15, up to a maximum score of 100%. (This time you cannot do just any problem for extra credit.)
Exercises from §1.3, pp. 33-37. (Predicate Logic)
Exercises from §1.4, p. 45. (Basic Set Concepts)
Exercises from §1.5, pp. 54-56. (Set operations.)