mathematical クイズ

We show that the observation that a purely real isofrequency line of the PC is close to a mathematical circle is insufficient for establishing homogenizability.

It has been said that— when I made the observation, that if they were not married they ought to be—I endeavoured to stab their reputation. Now, I'll prove that I endeavoured to do nothing of the sort. [...] I'll prove it by logic, and I defy all the mathematicians in the habitable globe to known it down. I'll prove it by the regular mathematical construction of the English language, and will any man tell me there's any constructed language in the universe more mathematically regular than that?