How to prove #edges in a graph with combinatorial proof?
35168
How to use combinatorial proof instead of induction?
49585
Proof a graph is bipartite if and only if it contains no odd cycles
83434
Graph theory induction
123626
Prove that even $n$ can be partitioned to $\frac n2$ edges
49193
Constructing a graph from a degree sequence
46309
Prove that this graph is nonplanar
99931
Number of connected graphs on labeled vertices, counted according to parity
10910
How many edges does an undirected tree with $n$ nodes have?
75101
Let G = (V, E) be a simple undirected graph with n = |V | ≥ 1 vertices...
93304
How to prove Graph with $n$ vertices has Edge Chromatic Number no more than $n/2$ edges
117992
Help with graph induction proof
65622
Maximum edges in a square free graph
7626
Proving that every connected graph has a vertex whose removal will not disconnect the graph.
100168
Prove the existence of a graph of 15 vertices with some vertices degree given
113290
Prove combinatorics identity
54516
Number of edges of any spanning tree of a graph $G$ coming from a subgraph of $G$
123103
Prove recursive formula for number of spanning trees in complete graph.