Unformatted text preview: retraction, and say what the answer is. 2. Munkres, Ch.9 Â§ 59, exercise 2 on p. 370. 3. Let f : S 1 â†’ S 1 be a continuous map of nonzero degree. Show that f is surjective. Remark: The notion of degree (introduced in class) appears in the book in exercise 9 from Â§ 58. I encourage you to look at that exercise, but you do not need to hand it in....
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 Spring '05
 SMITH
 Math, Topology, deformation retraction

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