Propositional Logic Quiz

A priori

reasoning that proceeds from theoretical deduction rather than from experience

A posteriori

reasoning that proceeds from observations or experiences rather than from theoretical deduction.

Axiom

A presupposition upon which an argument is based, which may not be explicitly state din the argument itself.

Hypothetical Syllogism

If P, then Q.

If Q, then R.

Therefore, if P, then R.

Modus Ponens

If P, then Q.

P.

Therefore Q.

Modus Tollens

If P, then Q.

Not Q, therefore not P.

Disjunctive Syllogisms

Either P or Q.

P.

Therefore, not Q.

Conjunctive Syllogisms

P.

Q.

Therefore P and Q.

Affirming the consequent

Fallacy for Modus Ponens

Denying the antecedent

Fallacy for Modus Tollens

False dilema

Fallacy for Disjunctive Syllogism

Logic

Way or method of reasoning

Premise

a proposition suporting or helping ot support an conclusion

Conclusion

A statement that purports to follow from other premises by means of an argument

Syllogism

A kind of ligcal argument that applies deductive reasoning

Fallacy

A statemnt based on weak or invalid inference

Deductive Logic

Starts with propositions, and is evaluated for validity

Inductive Logic

starts with observatiosn and is used as evidence as eiher strong or weak.