Math 361K

Homework 1, due Thursday Jan 28 by 2pm
sect 1.1 #7
sect 1.1 #15. What about direct images rather than inverse images?
sect 1.1 #21
sect 1.2 #11
     Show that a nonempty finite set of natural numbers has a largest element.
sect 1.3 #3 . Can you generalize?
sect 1.3 #13