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# D1 path definition watch

1. In my D1 Edexcel book it says:

''A path is a finite sequence of edges, such that the end vertex of one edge in the sequence is the start vertex of the next, and in which no vertex appears more than once''

Idon't understand? Can someone clarify please? Thanks a lot
2. Seems like a pretty concise definition to me. What don't you understand?
3. (Original post by xXxiKillxXx)
In my D1 Edexcel book it says:

''A path is a finite sequence of edges, such that the end vertex of one edge in the sequence is the start vertex of the next, and in which no vertex appears more than once''

Idon't understand? Can someone clarify please? Thanks a lot
It just means a path is where some vertices (not all) have been joined up by edges (arcs), and there are no repeats i.e. ABCDE is a path. ABCDCBE is not.
4. (Original post by dknt)
It just means a path is where some vertices (not all) have been joined up by edges (arcs), and there are no repeats i.e. ABCDE is a path. ABCDCBE is not.
So ABDF would be a path, and ABGDCG, wouldn't right?

As the second one returns to G twice?
5. (Original post by xXxiKillxXx)
So ABDF would be a path, and ABGDCG, wouldn't right?

As the second one returns to G twice?
Yes.

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