0 for an even stronger reason than one that has already been accepted:
The proposition is incomprehensible to us, and hence a fortiori we cannot be justified in believing it.
1 used to describe an argument that gives a stronger reason than one that has already been accepted:
his a fortiori argument
If the point of minimum marginal cost has not yet been reached, it follows a fortiori that the point of minimum average cost has not been reached either.
There is, a fortiori, no reason why the same word in this Act should not be similarly construed.
Actions generally do speak louder than words: because, paradoxically, they aren't meant to 'speak' at all, and a fortiori aren't meant to speak what's false.
A fortiori reasoning draws on existing confidence in a proposition.
Obviously, the case was stronger than the one actually provided for, so it could be regarded as a fortiori.
