logic 5.2 & 5.3 Flashcards
the traditional square of opposition
1
Q
what is an inference ?
A
is said to be immediate when a conclusion is drawn from only one premise
2
Q
when are two statements contradictories ?
A
if they cannot both be true
3
Q
what is a necessary truth ?
A
is one that cannot be false under any possible circumstances
4
Q
what is a subcontraries ?
A
two statements if they cannot both be false but they can both be false
5
Q
what is a statement ?
A
is necessarily false if it cannot be true in any possible circumstances
6
Q
what is sub alternation ?
A
the logical relationship between a universal statement and its corresponding particular statement
7
Q
what is a superaltern
A
the universal statement
8
Q
what is a subaltern
A
the particular statement
9
Q
what is the traditional square of opposition ?
A
all these logical relationships pictured in a diagram
10
Q
A
