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# Exercise 26 - Chapter 7

edited April 2018

Consider the function $$f : X \rightarrow Y$$. For each point $$y \in Y$$, the set $$f^{−1}(y) \subseteq X$$ above it is called the fiber over y.

Exercise 7.26.

1. What is the fiber over a?
2. What is the fiber over c?
3. What is the fiber over d?