Presentation is loading. Please wait.

Presentation is loading. Please wait.

Validity and Conditionals There is a relationship between validity of an argument and a corresponding conditional.

Similar presentations


Presentation on theme: "Validity and Conditionals There is a relationship between validity of an argument and a corresponding conditional."— Presentation transcript:

1

2 Validity and Conditionals There is a relationship between validity of an argument and a corresponding conditional.

3 Validity and Conditionals There is a relationship between validity of an argument and a corresponding conditional. Argument: P, -P>-Q | Q Corresponding Conditional:(P&(-P>-Q))>Q

4 Validity and Conditionals There is a relationship between validity of an argument and a corresponding conditional. Argument: P, -P>-Q | Q Corresponding Conditional:(P&(-P>-Q))>Q An argument is valid iff its corresponding conditional is a logical truth.

5 Example Argument: P, -P>-Q | Q Corresponding Conditional:(P&(-P>-Q))>Q An argument is valid iff its corresponding conditional is a logical truth. P Q TFTFTFTF TTFFTTFF TFTF*TFTF* TFTT*TFTT* TTFF*TTFF* P -P>-Q | QP & (-P > -Q)) > Q

6 Example Argument: P, -P>-Q | Q Corresponding Conditional:(P&(-P>-Q))>Q An argument is valid iff its corresponding conditional is a logical truth. P Q TFTFTFTF TTFFTTFF TFTFTFTF TFTTTFTT TTFFTTFF TFTF*TFTF* TFTT*TFTT* TTFF*TTFF* P -P>-Q | QP & (-P > -Q)) > Q

7 Example Argument: P, -P>-Q | Q Corresponding Conditional:(P&(-P>-Q))>Q An argument is valid iff its corresponding conditional is a logical truth. P Q TFTFTFTF TTFFTTFF TFTFTFTFT TFTTTFTT TTFFTTFF TFTF*TFTF* TFTT*TFTT* TTFF*TTFF* P -P>-Q | QP & (-P > -Q)) > Q

8 Example Argument: P, -P>-Q | Q Corresponding Conditional:(P&(-P>-Q))>Q An argument is valid iff its corresponding conditional is a logical truth. P Q TFTFTFTF TTFFTTFF TFTFTFTFT TFTTTFTTF TTFFTTFF TFTF*TFTF* TFTT*TFTT* TTFF*TTFF* P -P>-Q | QP & (-P > -Q)) > Q

9 Example Argument: P, -P>-Q | Q Corresponding Conditional:(P&(-P>-Q))>Q An argument is valid iff its corresponding conditional is a logical truth. P Q TFTFTFTF TTFFTTFF TFTFTFTFT TFTTTFTTF TTFFTTFF TFTF*TFTF* TFTT*TFTT* TTFF*TTFF* P -P>-Q | QP & (-P > -Q)) > Q For more click here


Download ppt "Validity and Conditionals There is a relationship between validity of an argument and a corresponding conditional."

Similar presentations


Ads by Google