All the examples given are of trivial things. Isoceles triangles and Fermat's last theorem. Both things you can explain in a sentence.
Let's look at something with "mnemonic names": groups, rings and fields. Quickly by just looking at the name which one is the most generic and which most specific.
Maths already involves a ludicrous amount of rote memorization, I'm not sure that using some guy's name is the hard problem. Internalizing all its nuance is.
It seems like the experimental procedure would require definitions at least several layers deep, the control based on real names and experimental group based another metric. Maybe the experimental groups names would be more closely tied to the structure of the math they were naming though that seems challenging.
How did you come up with this number? You took 100,000 samples and 99,999 of them agreed? I don't personally know 100,000 mathematicians.
But let’s make an experiment. Let an average high school student memorize these names:
A Calabi-Yau manifold is a compact, complex Kähler manifold with a trivial first Chern class.
And now let her explain what the above definition is about.