That is, iff the whole of it is among the parts of some world.

A logic is relevant iff it satisfies the following condition:

I'm only agreeing with Meg that-" iff "You see me phone his section chief ten minutes ago?

Two hypercycles have equal distances iff they are congruent.

Indeed, iff the matter were so trivial, why is Ms Crawley going to the trouble of writing an article about it?

Let be an arbitrary ordered field, and a nonempty set; a function is called a metric on , iff the following conditions hold:

An object is the product of and , denoted , iff it satisfies this universal property:

Also, is symplectic, iff the flow of is symplectic for every .

As a set B of connectives is functionally complete if and only if it generates , we obtain the following characterization: B is functionally complete iff it is not included in one of the five Post's classes.