Pigeonhole Principle, Discrete Mathematics, Combinatorics, Mathematical Logic, Problem Solving.
condition of n−1 degrees. So the range of degrees can either {1,2,…,n−1} or {0,1,2,…,n−2}, and both sets have n−1 elements. There are n vertices, so at least two would have the same degree. Conclusion This blog introduced us to the very interesting pigeonhole principle and its generalized form. We