“Your halfbirthday?” I pointed to the plate.

a commemorative plaque

The process of destreamlining a GS-4 amounted to little more than ripping off her running board skirts and painting her black.

But we cannot infer from them the equivalence in any sense of these two propositions, since we have used in our proof of the prime number theorem a subsidiary theorem on the order of magnitude of 𝜁'(s)/𝜁(s).