Sheldon names his cats (with the exception of one) after famous physicists.
The title refers to the name of one of the cats that Sheldon substitutes for Amy when they break up.
Sheldon: I'd like you to meet Oppenheimer, Frisch, Panofsky, Feynman, Weiskof...
Mary: (interrupts) Yeah, I get it. You got a lot of cats and you gave 'em cute Jewish names.
Howard: Women, you can't live with them and you can't successfully refute their hypotheses.
Sheldon: Amen to that.