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Unformatted text preview: EE221A Section 1 8/26/11 1 Administrivia 1.1 Section and Office Hours Scheduling If you have a conflict, please contact Prof. Tomlin and/or Pat by email and let us know about it. Well try to accomodate everyone but it may not be possible. 1.2 Homework collaboration It is encouraged that you work in groups, however each person must hand in her/her own problem sets. Please indicate the names of everyone you worked with on a given homework set. Example: Studied/discussed with I. Newton, C. Columbus, M. Curie. Problem sets are due by 4.30pm in Tomlins mailbox in 253 Cory 2 Notes on Proofs If and only if Sometimes written iff. Other synonyms: equivalent, necessary and sufficient. The symbol clearly shows what it means: P Q means P = Q and Q = P . This suggests that often when asked to prove an if and only if theorem, you can show each implication separately. When you do this, remember that you can assume one side of the implication but not the other, at a time. Definitions are effectively if and only if statements, though only the word if is typically used in them....
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 Fall '10
 ClaireTomlin

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