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'".

Ukko

1. In Finnish mythology, Ukko (Estonian spelling Uku) is a god of sky, weather, crops (harvest) and other natural things. He is also the mo..

Farkel

1. Dice game where two or more players accumulate points based on strategy and chance. 2. The Act Of Pooping Rainbows And Unicorns. &quo..

Knunch

1. To punch someone whilst wearing knuckle dusters. 'Let's go knunch those twats' See punch, hit, weapon, knuckle duster, ..

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If And Only If Edit Meaning