例句與造句

1. The null graph is also counted as an apex graph even though it has no vertex to remove.
2. An edgeless graph is occasionally referred to as a null graph in contexts where the order-zero graph is not permitted.
3. Conversely, a graph which is not a complete or null graph whose adjacency matrix satisfies both of the above conditions is a strongly regular graph.
4. The graph with no vertices and no edges is sometimes called the " null graph " or " empty graph ", but the terminology is not consistent and not all mathematicians allow this object.
5. The Gr鰐zsch graph is a member of an infinite sequence of triangle-free graphs, each the Mycielskian of the previous graph in the sequence, starting from the null graph; this sequence of graphs was used by to show that there exist triangle-free graphs with arbitrarily large chromatic number.
6. It's difficult to find null graph in a sentence. 用null graph造句挺難的