It's simply a question of logic, of mathematical logic.

In mathematical logic, you can prove or disprove universal statements by a variety of methods.

There's mathematical logic to music which, if correctly employed, can result in the stimulation of emotion.

DeLong, H. (1971), "A profile of mathematical logic", Addison Wesley

So okay, first of all, I don't necessarily believe in that, there's no mathematical logic to this assumption.

Informed by mathematical logic, it was highly practical, rich in terms of its ideas, and lacked any over-elaborate decoration.

So it is a matter of mathematical logic that an economy with more educated people will be more productive.

If they can't be tested against the constraints of mathematical logic, how will we ever know if they are true?

The facts and laws of physics, with the assistance of mathematical logic, never fail to furnish precious answers to such questions.

You're applying the transitive law of mathematical logic to tell me that C minus A does not equal B if C is not the sea.

The Spirit of Mathematical Logic was the title of a public lecture given by a newly arrived Polish professor to Dublin in November 1946.