The sentence "In the most common case, every valid dependency graph has the following properties," should potentially have a colon (":") instead of a comma, since it's before the bullet points.
Also it may be better if the first bullet point was written as "undirected edges results in a connected graph" instead of "undirected edges results in connected graph".
The sentence "In the most common case, every valid dependency graph has the following properties," should potentially have a colon (":") instead of a comma, since it's before the bullet points.
Also it may be better if the first bullet point was written as "undirected edges results in a connected graph" instead of "undirected edges results in connected graph".