TOPIC: 3 scrum artifacts - vs. Cornelius's five and the third/fifth, in particular.

Hi. I've come to know three (3) scrum artifacts.

1. Product backlog
2. Sprint backlog
3. Product increment

Yet, Cornelius points to five artifacts, two of which are from Agile:

1. (Vision statement) - first agile artifact
2. (Product Road map)- Agile project MGMT tool
3. Product Backlog
4. Sprint backlog
5. Sprint burden chart

Aside from the two Agile artifacts entering into Scrum artifacts, how should I reconcile his third Scrum artifact of Burndown chart vs. product increment. While one my rationalize his way there, are they really one in the same?

Thanks!