The first few Ramsey numbers are relatively simple to calculate. Let’s say you want to know the size of the smallest graph that must unavoidably hold a clique of size two, or R(2) to mathematicians.

How to create a simple interactive graph with Plotly. Visualise your data and embed interactive, annotated graphs in your stories for free. Posted: 11 June 2015 By: ... You could, for example, have a ...

There are a million things to say about this graph, and I'm pretty sure that everybody who sees it will find some way to shoehorn it into their previously held opinions. So bear with me, please ...