If And Only If

What is If And Only If?

A term used by mathematicians and logicians to indicate that something happens under very specific conditions. Often seen in proofs and theories.

1) The sum a geometric sequence is given by a/(1-r) if and only if |r| < 1.

2) In a bar:

dumped guy: "My girlfriend left me because I told her I loved her!"

other guy: "What a bitch!"

dumped guy: "No, it's all my fault, she's a mathematician, and I should have said 'I love you and only you'".

Phlem

1. mucus that is lodged into your throat from your lungs and nose that comes out of your mouth usually when you cough or "hauk" a..

Veto Bomb

1. In halo, where everyone on your team simontaniously vetoes a map with only one second left on the countdown in hopes to play a better ma..

1. Obviously the best letter in the alphabet, also closely related to pandas. The definition of Q is so amazing that if you knew then your ..

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If And Only If Edit Meaning