How to show that there is at least one triangle in G
92267
Adjacency matrix and existence of triangle
129002
Number of triangles formed by $m$ lines
111903
An inequality for sides of a triangle
2251
Can someone give me a hint on how to prove this?
127866
Two triangles and their content ratio
75101
Let G = (V, E) be a simple undirected graph with n = |V | ≥ 1 vertices...
62455
Prove Equivalence Relation in G
106562
Is $3 \ge 1$ or is it just $3 > 1$?
73392
How to prove that triangle inscribed in another triangle (were both have one shared side) have lower perimeter?
52121
Let $G$ be a finite group with $|G|>2$. Prove that ${\rm Aut}(G)$ contains at least two elements.
140444
Prove $\chi(G)\chi(\bar{G}) \geq n$ for chromatic number of graph and its complement
46863
Show that $g$ is injective
27954
Prove triangle inequality using the properties of absolute value
37744
Prove that given $a,b,c > 0$, it is possible to construct a triangle with sides of length $a,b,c$ if and only if $pa^2+qb^2 > pqc^2$
91229
Complexity of counting the number of triangles of a graph
23979
Inequality involving sides of a triangle
109767
Prove that three points are enough to draw/define one and only one circle