Analytic

Adj.

(said of judgments)

Something that is so because it has to be so, as opposed to something that merely happens to be so.
That I was born on my birthday is analytic. That I was born on a Tuesday is synthetic. (After Immanuel Kant, Critique of Pure Reason, 1781)

The theory of the analytic-synthetic dichotomy presents men with the following choice: If your statement is proved, it says nothing about that which exists; if it is about existents, it cannot be proved.