graph invariant造句

It is also the most general graph invariant that can be defined by a deletion contraction recurrence.
Extremality can be taken with respect to different graph invariants, such as order, size or girth.
Several different graph invariants can be defined from the simplest sentences ( with different measures of simplicity ) that define a given graph.
"' Algebraic graph theory "'is a branch of mathematics in which algebraic methods are applied to problems about graph invariants.
In 1971, Hosoya defined topological index ( a graph invariant ) as the total number of computer ( mathematical ) chemistry investigations for organic compounds.
It's difficult to find graph invariant in a sentence. 用graph invariant造句挺难的

In analogy to the characterizations of the outerplanar and planar graphs as being the graphs with Colin de Verdi鑢e graph invariant at most two or three, the linklessly embeddable graphs are the graphs that have Colin de Verdi鑢e invariant at most four.
The connections between the atoms can be described by various types of topological matrices ( e . g ., distance or adjacency matrices ), which can be mathematically manipulated so as to derive a single number, usually known as graph invariant, graph-theoretical index or topological index.
A different graph invariant, the "'rectilinear thickness "'or "'geometric thickness "'of a graph, counts the smallest number of planar graphs into which can be decomposed subject to the restriction that all of these graphs can be drawn simultaneously with straight edges.