A2 - Conditions and Conditionals A conditional sentence any sentence of the form If p then q where the if part is the antecedent and the then part

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Conditions and Conditionals A conditional sentence: any sentence of the form If p , then q ’, where the ‘if’ part is the antecedent , and the ‘then’ part is the consequent . Equivalents: If p, then q p only if q q if p Ex.: “If Jane is my aunt, then she is a woman”. Careful!!! Distinguish from the converse : “If Jane is a woman, she is my aunt.”
Background image of page 1

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

View Full DocumentRight Arrow Icon
Necessary and Sufficient Conditions A necessary condition is something that is required for x’s falling under a concept F Definition: A necessary condition for some state of affairs S is a condition that must be satisfied in order for S to obtain. Ex.: a NC for getting an A in a class is that a student hand in a term paper. This means that if a student does not hand in a term paper, then a student will not get an A, or, equivalently, if a student gets an A, then a student hands in a term paper. Note: The consequent of a conditional specifies necessary conditions for the antecedent.
Background image of page 2
Necessary and Sufficient Conditions A sufficient condition is something that would be enough for x’s falling under a concept F. Definition:
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/06/2011 for the course PHIL 111 taught by Professor Kain during the Spring '08 term at Purdue University-West Lafayette.

Page1 / 9

A2 - Conditions and Conditionals A conditional sentence any sentence of the form If p then q where the if part is the antecedent and the then part

This preview shows document pages 1 - 4. Sign up to view the full document.

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