Lecture 1/14/08

Lecture 1/14/08 - Being a citizen is a necessary condition...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Disjunction (or, unless) o Dallas will win = D o Buffalo will win = B o D v B Conditional o You earn exactly 900 points = N o You get some form of A = A o If you earn exactly 900 pts, then you will get some form of A N A o Statement following ‘if’ is antecedent, statement following ‘then’ is consequent (does not apply to ‘only if’) o Jim can vote = V o Jim is a citizen = C o Jim can vote if Jim is a citizen C V NOT TRUE o Jim can vote only if Jim is a citizen V C TRUE o A sufficient condition is a condition that suffices for something else (but it may not be necessary) Earning 800 points is sufficient for passing the class, but it is not necessary o A necessary condition is a condition that is required for something else (but it may not be sufficient) Hydrogen is necessary for water (but it is not sufficient)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Being a citizen is a necessary condition for voting (but it is not sufficient) o Sufficient Necessary Biconditional o If and only if o Iff o Is necessary and sufficient for o You will get a P in this class if and only if you earn a C- or better You get a P = P You earn a C- or better = C P C Translating Compound Statements o Ill buy an Xbox 360, and either a PSP or Nintendo DS X = Ill buy and Xbox 360 P = Ill buy a PSP N = Ill buy a Nintendo DS X, and either P or N X (P v N) o The car runs well and the motorcycle runs well, but you should be careful if you take the boat out C = the car runs well M = the motorcycle runs well Y B C and M, but Y if B (C M) (B Y)...
View Full Document

Page1 / 2

Lecture 1/14/08 - Being a citizen is a necessary condition...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online