SymmetryBook: Chapter 4 exercise claims an equivalence that fails; two others lack a hypothesis
Reported · info · Specification gap
Exercise 4.6.9 claims a map from pairs of cycles onto bicycles that commute is onto, but a two-point counterexample shows it is not. Exercises 4.2.6 and 4.3.5 need a hypothesis that the text omits.
Found: ; reported: ; status since: . Reporter: Mike Murunov