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21 Cards in this Set
- Front
- Back
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The Enthymeme |
A syllogism missing one of the propositions |
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Sorites |
a series of syllogisms without conclusions Regressive |
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Progressive Sorites |
First premise contains the subject (Rule: only first premise may be particular, only last negative) |
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Regressive Sorites |
Last premise contains the predicate (Rule: only first premise may be negative, only last particular) |
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The Epicheirema |
a syllogism with a causal premise (a "double syllogism") Every Doctor is smart because they study hard. Lenny is a Doctor Therefore, Lenny is smart |
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Compound Syllogisms |
Conditional Disjunctive |
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Conditional Syllogisms |
the first proposition contains an "if...then" statement |
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Disjunctive syllogism |
the first preposition contains an "either...or" syllogism |
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Conjunctive Syllogisms |
the first proposition contains two contradictories |
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Expository Syllogisms |
have a singular middle term |
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p, q, r, s |
propositions |
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sideways 'U' |
implies |
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~ |
not |
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. : |
therefore |
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v |
or as in, "either...or" |
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& or (dot) |
and |
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triple line thing |
if and only if |
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Purely Hypothetical Syllogism |
contains only sideways 'U' |
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Valid conditional syllogism |
Affirming the Antecedent (AA) Denying the Consequent (DC) |
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Invalid Conditional Syllogisms |
Affirming the Consequent (AC) Denying the Antecedent (DA) |
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