quiz 2 Flashcards
give the definition of figure
Figure is the disposition of terms in the premises.
Give the definition of mood.
Mood is the disposition of premises according to quantity and quality.
How many different moods are there?
Four
How many different moods are there?
64 (16 for each figure)
If we say that a syllogism is in the mood AA, what do we mean?
That the premises are both A statements.
If we say that a syllogism is in the mood EA, what do we mean
That the major premise is an E statement and the minor
premise is an A statement.
Indicate the mood of the following syllogism:
All mortals must die
All men are mortal
Therefore, all men must die
AA
Indicate the mood of the following syllogism:
No men are immortal
All angels are immortal
Therefore, no angels are men
EA
Using the letters A, E, I, and O to indicate the kind of statements used as premises, write out the 16 possible
AA, AE, AI, AO, EA, EE, EI, EO, IA, IE, II, IO, OA, OE, OI, OO
Can syllogisms of the same mood be in different figures? (Can there be, for example, an AA syllogism in
the First and Second Figure?)
Yes
With sixteen different moods and four different figures, how many possible kinds of syllogisms are
there?
64
Give the name of at least one whole mood that is invalid
EE or OO
Of the 64 different kinds of syllogisms, how many are valid?
19
What are the valid moods in the first figure (indicate them both by their letters and names)
BARBARA: AA
CELARENT: EA
DARII: AI
FERIO: EI
- Describe the five most commonly used syllogisms (i.e., tell what mood and figure they are in).
- What are the names for these commonly used syllogisms invented by William of Shyreswood?
AA (first), EA (first), EA (second), AE (second), AE (fourth)
BARBARA, CELARENT, CESARE, CAMESTRES, CAMENES
