Aspects of a Proposition
The arrangement of terms and words in a proposition so that the proposition either affirms (supports) or negates (denies) something about a specific topic.
What is Categorical Form?
The relationship between A and O propositions and E and I propositions. They cannot both be true/false at the same time. One must be true and the other false.
What is Contradictory?
Change the quality of the subject and predicate terms in A, E, I, or O propositions.
What is Obversion?
This contains the major term and is the first premise in a properly structured syllogism.
What is the major premise?
The two rules broken: All Benjamin is a model. All models are people who are attractive. Therefore, all people who are attractive are models.
What breaks Rule 1: There are only 3 terms? and Rule 2: The middle term cannot be in the conclusion?
When a syllogism is structured correctly.
What is a valid syllogism?
The subject term in a proposition is represented by this letter, AND the predicate term is represented by this letter, AND the verb is called this.
What are S, P, and copula?
The relationship between A and E propositions. They cannot be true at the same time, but they can both be false at the same time.
What is Contrariety?
Switch the subject and predicate terms in an E or I proposition.
What is Conversion?
This contains the minor term and is the second premise in a properly structured syllogism.
What is the minor premise?
The two rules broken: Some people are singers. Some singers are virtuosos. All virtuosos are people.
What breaks rule 3: The middle term must be distributed at least once? and Rule 4: if a term is distributed in the conclusion, it must be distributed in the premises as well?
When a syllogism is true and structured correctly...
What is a sound syllogism?
This is the positive or negative aspect of a proposition.
What is quality?
The relationship between I and O propositions. They can both be true at the same time, but they cannot both be false at the same time.
What is Subcontrariety?
Change the quality of the subject and predicate terms, switch the subject and predicate terms, and change the quality of the new subject and predicate terms in an A and O proposition.
What is Contraposition?
This appears in both of the premises but not in the conclusion of the syllogism.
What is the middle term?
The two rules broken: No chocolates are non-tasty. No steak is non-tasty. All steaks are chocolate.
What breaks Rule 5: No conclusion can follow two negative premises and Rule 7: If either premise is negative, the conclusion must be negative?
The location of the middle term in the major and minor premises.
What is figure?
The universal or particular aspect of a proposition.
What is quantity?
The relationship between A and I propositions and E and O propositions. The truth of the universal implies the truth of the particular.
What is Subimplication?
When two propositions or terms are identical to each other.
What is Logical Equivalence?
This is the subject in the conclusion of a syllogism and appears in the minor premise.
What is the minor term?
The two rules broken: Some superstitious people are people who have seen ghosts. All people who have seen ghosts are unusual people. No unusual people are superstitious people.
What is Rule 4: Illicit Minor or Illicit Major and Rule 6: Negative Conclusion from Positive Premises?
The order and type of categorical propositions in the syllogism.
What is mood?
These are the four statements that represent the letters A, E, I, and O.
What are: All S is P, No S is P, Some S is P, and Some S is not P?
The relationship between A and I propositions and E and O propositions. The falsity of the particular implies the falsity of the universal.
What is Superimplication?
All S is P in Contraposition.
What is All non-P is non-S?
This is the predicate in the conclusion of a syllogism and appears in the major premise.
What is the major term?
In order: Major Premise, Minor Premise, Conclusion
What is a categorical syllogism?
Mood and figure together.
What is schema?