Y by moom
Given a graph with
vertices and degrees in
, prove that there exist
vertices of this graph with equal degrees and a common neighbour.
Proposed by Alireza Alipour



Proposed by Alireza Alipour
This post has been edited 3 times. Last edited by matinyousefi, Apr 27, 2020, 12:52 PM
Reason: Typo
Reason: Typo