00:01
So recall that kn, we'll go through a couple examples.
00:05
So kn is the graph kind of set that looks like this.
00:11
So this would be k1, where it's just one point.
00:14
K2 is two points.
00:17
And essentially, n tells you the number of points.
00:21
And we also know that all points are connected to each other.
00:25
So this is k3 in which every point is connected.
00:30
And then we get to k4, which k4 is where it gets a little bit more interesting.
00:44
So with k4 we have all points connected, which means like this.
00:49
And then lastly, we'll have k5, which means we have five points.
00:53
So it's a pentagon like this.
00:57
But then all of these points are connected like that.
01:04
So what we end up seeing for the edge chromatic number is actually pretty interesting...