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Circuit Double Cover of Graphs by Cun-Quan Zhang

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Appendix DHints for exercises

Chapter 1

Hint for Exercise 1.1. See Section 1.4 and Conjecture 1.4.4.

Hint for Exercise 1.2. It is possible that the circuit decomposition images of 2G may contain a digon, which corresponds to a single edge of the original graph G (not a circuit).

Hint for Exercise 1.3. The union of images* and the symmetric difference of all members of images* forms an even subgraph double cover of the graph. (See Definition A.2.3 for the definition ...

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