Talk:Partial geometry

What is point graph?

The point graph of a $pg(s,t,\alpha )$ is a strongly regular graph: $srg((s+1){\frac {(st+\alpha )}{\alpha }},s(t+1),s-1+t(\alpha -1),\alpha (t+1))$ .

What means point graph here? It needs explanation, link to article or reference to article/book. Jumpow (talk) 16:26, 21 August 2017 (UTC)[reply]

Is it collinearity graph? Jumpow (talk) 16:40, 21 August 2017 (UTC)[reply]

Yes it is. Have added the link.--Bill Cherowitzo (talk) 20:51, 21 August 2017 (UTC)[reply]