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'".

Rhizome

1. A horizontal stem of a plant that is usually found underground, often sending out roots and shoots from its nodes. Students of Naropa Un..

Rutta

1. A teaching ninja, one whom seeks perfection from everything she desires and creates. That rutta is some lass. She taught me a lot. See..

Halloweenigan

1. A person that really likes halloween, or is a halloween addict..yeeahh.. sarah: *listening to halloween music at xmas* meghan: ur such..

All you need for a faster workflow in one place.

If And Only If Edit Meaning