The previous post's reference to colors suggests a review . . .
A test of OpenAI on the above DevDay date —
This ridiculous hallucination was obviously suggested by what
has been called "the enormous theorem" on the classification
of finite simple groups. That theorem was never known as the
(or "a") diamond theorem.
On the bright side, the four colors beside Microsoft's Nadella in the
photo above may, if you like, be regarded as those of my own
non-enormous "four-color decomposition theorem" that is used in
the proof of my own result called "the diamond theorem."