Rules of Inference Flashcards

memorize

1
Q
A

Modus Ponens

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2
Q
A

Modus Tollens

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3
Q
A

Hypothetical Syllogism (Transitivity)

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4
Q
A

Disjunctive Syllogism

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5
Q
A

addition

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6
Q
A

Simplification

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7
Q
A

Conjunction

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8
Q
A

Resolution

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9
Q

A declarative sentence (that is, a sentence that declares a fact) that is either true or false, but not both.

A

Proposition

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10
Q

p ^ q

A

conjunction

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11
Q

p v q

A

disjunction

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12
Q

converse, contrapositive, or inverse? p –> q, q –> p

A

converse

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13
Q

converse, contrapositive, or inverse? p –> q, ¬q –> ¬p

A

contrapositive

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14
Q

converse, contrapositive, or inverse? p –> q, ¬p –> ¬q

A

inverse

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15
Q

A compound proposition that is always true, no matter what the truth values of the propositional variables that occur in it

A

tautology

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16
Q

De Morgan’s Laws¬(p ^ q) ⌯ ¬p v ¬q, ¬(p v q) ⌯ ¬p ^ ¬q

A

De Morgan’s Laws

17
Q
A

Identity laws

18
Q
A

Domination laws

19
Q
A

Idempotent laws

20
Q
A

Double negation law

21
Q
A

Commutative law

22
Q
A

Associative laws

23
Q
A

Absorption laws

24
Q
A

Negation laws

25
Q
A

Universal instantiation

26
Q
A

Universal generalization

27
Q
A

Existential instantiation

28
Q
A

Existential generalization