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'".

;-)

1. A winking smiley face with a nose, used in IM's, games, emails, etc. Person A: WOAH! NICE CAR! Person B: Thanks ;-) See ;), :d, ..

Zaww

1. Zaww, is in Aww, or aw. It means it has affection, other then saying awwwwwwwwwwwwww! Person 1: (posts a picture of a kitten) Person 2..

Lisa Chen

1. Adj, to desrcibe a girl who has excellent features and a gifted intelligence. Usually have high expectations and are fun to be around. H..

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If And Only If Edit Meaning