Talk:Buchholz hydra

Content

Much of this article's content is copied and pasted from this page. Is there a Wikipedia policy about this? C7XWiki (talk) 02:35, 4 September 2021 (UTC)

Yes, this was only because I was very interested in this subject and couldn't find that much info from other sources, so recently I have been changing this up to be more unique, having more info and not being entirely plagiarised. Binary198 (talk) 09:00, 4 September 2021 (UTC)Binary198

What's a two-dimensional tree?

The section Buchholz hydra § Rules starts with

The game is played on a hydra, a finite, rooted, two-dimensional, connected mathematical tree $A$ with the following properties...

What does "two-dimensional" mean? (And trees are connected by definition, aren't they? See tree (graph theory), linked from the lead section.) – Tea2min (talk) 10:30, 8 September 2021 (UTC)