Notes - 012508

# Notes - 012508 - January 25, 2008 Proposition Labels /...

This preview shows pages 1–3. Sign up to view the full content.

January 25, 2008 Proposition Labels / Statement letters To save writing, label propositions with lower case letters called proposition labels/statement letters. EX: h: Helen is the capital of Montana. Use letter of verb, subject, to help understand what your proposition labels stand for. Always LOWER CASE Compound Propositions Two simple propositions. Definition of Compound Proposition: A statement that is a logical combination of multiple simple propositions. Conjunctions : formed in English with the word ‘and’ formed in logic with the caret symbol “^” and true only when both participating propositions are true Ex of Conjunction logic: p: I bought gas q: I got a haircut p^q: I bought gas and I got a haircut. ( ‘I’ would be assumed in conversational english but not logic.) Disjunctions: Three is the # of sides of a triangle, or the # of times this class meets per week. . Propositions: Three is the # of sides of a triangle (true or false) [Three is the # of] times this class meets per week.(true or false)

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

View Full Document
Under which circumstances is the following claim true? Possibilities:
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 04/02/2008 for the course C SC 245 taught by Professor Mccann during the Spring '08 term at Arizona.

### Page1 / 4

Notes - 012508 - January 25, 2008 Proposition Labels /...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online