I am wondering ...
Given the following Graph:
A walk is just something like A, B, C, B, E
In a closed walk the "begin" vertex needs to be the same as the "end" vertex.
And we are allowed in that walk to use the vertices that we cross in out walk multiple times...
So a closed walk can be A, B, C, D, E, B, A.
Where "B" is used twice and the start/begin vertex is "A"
Now ... is it correct if I assume if this is a closed walk as well?
A, B, C, B, A
Or is this not allowed?