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Intro to Philosophy > Logic for Test One > Flashcards

Flashcards in Logic for Test One Deck (21)
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1

If A then B A Therefore B

Modus Ponens (MP)

2

If A then B B is not true Therefore A is not true

Modus Tollens (MT)

3

Either A or B B is not true Therefore A

Disjunctive Syllogism (DS)

4

If A then B If B then C Therefore, If A then C

Hypothetical Syllogism (HS)

5

If A then B If C then B Either A is true or C is true Therefore B is true or D is true

Constructive Dilemma (CD)

6

If A then B If C then D Either B is False or D is False Therefore A is False or C is False

Destructive Dilemma (DD)

7

If A then B B is true Therefore A is true

Affirming Consequent (AC) INVALID

8

If A then B A is not true Therefore B is not true

Denying the Antecedent (DA) INVALID

9

T-->T

True

10

T-->F

False

11

F-->T

True

12

F-->F

True

13

F v F

False

14

F ^ F

False

15

AC invalid 

16

HS vaild 

17

MP valid 

18

DA invalid 

19

MT valid 

20

CD Valid 

21

DS Valid